great lesson.. I have an eighth grader struggling in math.. I pray watching your videos will bring her up to speed..the kids laugh at her when she gets something wrong and she gets turned off from school really.. I try to tell her everyone makes mistakes sometime.. I tell her I'm happy when you at least try..thanks again for your video
Idk ive been homeschooled, using khan academy since the 2nd grade, virtually no other resources besides that and youtube. Idk kinda mid. Unless youre doing virtual learning all by yourself, just with sucky teachers, or like youre an extreme introvert, wouldn’t recommend it lol
I missed a few days of school due to sickness and came back to algebra class and it felt as if they were speaking a different language. This is so helpful thank you!
Thank you sooo much!!!! I didn't understand this in math class and now everything my teacher said finally makes sense!!! You are a true life saver. You just literally turned my c into an A! :-)
Thank you so much khan academy you helped me so much so far my math teacher shows us many things like we already know it and doesn't explain his work you have saved my grade thanks
Yay i understand it now! Our class finally is learning it and i know how to do it! Thx in the GEM program we are doing this in the 7th grade book i am in 6th grade
You did a decent job explaining the concepts in simple terms, change in y over change in x (rise over run). But it would have made the lesson whole if you would have presented the equation in slope- intercept form for each line, plugged the numbers in from the each of the lines and solved the equation in slope- intercept for both lines (showing the difference of the two slopes). That way we can see how the numbers on the line are represented in the equation and the slope of each line. Thank you for uploading and showing the basics
Hey, im confused. Slope is delta y over delta x, but to find delta y and x, what order do i subtract it? Like if the points are (-1,2) (-4, -5), what order do i subtract in? Would I do -5 - 2 or 2 - -5. The slope would be different based on which order i do. Please explain the order I should do it in.
I know this is an old video to comment but I really want somebody to explain to me and answer as to how steepness as Sal puts in the video be defined as "how quickly a line increases or decreases"?? I do understand that slope is the magnitude of how much a line inclines or declines from the horizontal axis or the ratio of change in vertical axis witg respect to change in horizontal axis but the definition mentioned above as by Sal here confuses me. I fail to conceptualise and understand it..can't make sense mathematically. I'd really appreciate and be thankul if someone could /would offer some clarity and explain in mathematical context!:)
@@amisha25211 simply it's this: if the line runs further horizontal, then it will have a less steep slope. A line with a steeper slope with run further vertical. :) More horizontal rise equals less slope, and more vertical rise equals more slope. That is how quickly a line decreases or increases - when it increases further, a larger slope upward is indicated. When it decreases quickly, that's indicating a slower and small slope range. :) Hope that isn't too confusing. May not see this but felt compelled to give it a shot for anyone else who may come across this. :) Been out of high school a couple years but I still recall that much :3
Just like velocity and acceleration. As acceleration or deceleration is constant change in velocity,(i assume it to be constant, when it might not be constant in all cases) Similarly slope is constant increase or decrease in height or depth when you're moving in the vertical direction or mapping something that has height of depth related to the point where you're standing. Well even i don't really know what slope is 😂 But as far as I understand for example if I'm standing outside a 3 story building at a distance 50 m and the height of the building is 20m, now i have been given a job of connecting a cable from top of the roof to the ground point where I'm standing. Now calculate the length of the cable or rope which will be connected from roof to that ground point you're standing at and calculate the slope? A²+b²= c² , 2500+400 = 2900 c=√2900 = 53.85 something metres long cable. The slope is how much metre it is elevated per 1 metre (unit metre) of the horizontal distance. So slope= total height(or depth) of the vertical object divided by the total distance(on the horizontal plane) you're standing from that object = 20m /50m = 0.8 m Slope is always more than 0 if you're not standing on the object or are parallel to the top point of the object or you are inside that object, in these cases the slope will be zero 0, Like if you're standing on the roof of that building the slope at that point is zero, or if you're standing inside the building the slope again is zero. Slope is nothing but a ratio of vertical distance vs horizontal distance between any two points in a (x,y) plane where x is horizontal axis and y is vertical axis.slope is steepness This is all i understood about slope , i don't know if it's right or wrong, 😶🌫️😶🌫️
I think im slow (witch isn’t a bad thing) but I have to watch this a few times for me to understand it right and fully. Im just so bad at math yet I want to be good at it I want to understand it but I just can’t :( - 8th grader
@@andersa222 this stuff is ALOT I found it difficult myself for yrs! but sorry to hear that, if you're having issues with solving the formulas try referencing some videos that help you with distributing properties because its alot of that in these linear equations
@@andersa222 and these Khan Academy videos he does a good job giving you visual representation of what he's trying to explain so try to really pay deep attention to the parts where he's graphing points cuz that makes it a bit easier once you see the lines on the graph
to be honest , i've always found it easy to learn from this guy, but unfortunately not for this time i learned the slope before and i forgot it but when i tried to learn it here again i was struggling to learn it this could be the worst explanation of slope i've ever heard
How come when my teacher explains it I don't get it, but when you explain it makes much more sense! Thank you Khan Academy!!!!!
i felt that to a spiritual level
Because you are stupid
@@samadsameena5606 No , it's just that sometimes teachers overcomplicate things.
@@samadsameena5606 no you are
@@abdurrahmanalshawabkeh5574 sheeeeesh man I am just jokin
great lesson.. I have an eighth grader struggling in math.. I pray watching your videos will bring her up to speed..the kids laugh at her when she gets something wrong and she gets turned off from school really.. I try to tell her everyone makes mistakes sometime.. I tell her I'm happy when you at least try..thanks again for your video
your a good teacher... keep it up!!!1
@@alikibueno2062 or parent
@@quasarki8917 or both
I hope things are going better now for you and your daughter
What level of understanding is she in?
Khan Academy is great. It makes stuff I have no idea about in my Algebra class be taught in a more simple way.
Hi,im in algebra 1
Ikr
I'm in pre-algebra
Lazy boy
i would rather be home schooled by him then have my teachers
no u
@@zangetsu8918 no u
@@donovanvargas2755 no u
Idk ive been homeschooled, using khan academy since the 2nd grade, virtually no other resources besides that and youtube. Idk kinda mid. Unless youre doing virtual learning all by yourself, just with sucky teachers, or like youre an extreme introvert, wouldn’t recommend it lol
Real
I missed a few days of school due to sickness and came back to algebra class and it felt as if they were speaking a different language. This is so helpful thank you!
ikr
Thank you Khan Academy for the video that saved me from dying
You are honestly better than my teacher. That is a very high compliment because I rate my teachers S tier.
Increase over run makes more sense
I wish I could give you a thousand likes, ooh my Allah you are the best teacher! Thank you sooooo much
This guy finna save my grades
fr
faxual
ahlie
Thanks for the video,
Now I'm three grades ahead of my curriculum. keep up the good work
what grade are you in?
@@minda1729 8th grade, most likely cuz thats when they teach slope
@@Divinity82 i did slope in 5th grade wha-
Thank you sooo much!!!! I didn't understand this in math class and now everything my teacher said finally makes sense!!! You are a true life saver. You just literally turned my c into an A! :-)
Yeah
I’m in 7th grade honors so I am learning 8th grade math so this really helps!!
this makes SO much sense, literally im so grateful to you!! thsnk you very muchh
World's best explanation I have ever seen.
my child is in 5th grade and she is learning 8th grade math, this really helped her understand how this works
my math teacher talks too fast so this helped a lot!!!
I love this guy so much he teaches better than my teacher
Sal you are the best maths teacher!
Best teacher ever!!!
Really Great Lecture!! 👍👍
Much Appreciated ❤️🎉🙏
wow this video is better than my teacher’s teachings
o(-`д´- 。)
Really grateful to have you. Thank you Khan Academy🙌🏻🙌🏻
This was really helpful
khan academy is the best
thanks khan acadamy!!!
My teacher really likes your channel so keep up the work because this helps me.
Thank you so much khan academy you helped me so much so far my math teacher shows us many things like we already know it and doesn't explain his work you have saved my grade thanks
this makes so much sense now
Yay i understand it now! Our class finally is learning it and i know how to do it! Thx in the GEM program we are doing this in the 7th grade book i am in 6th grade
Please put this into "Algebra" playlist at appropriate index.
You did a decent job explaining the concepts in simple terms, change in y over change in x (rise over run). But it would have made the lesson whole if you would have presented the equation in slope- intercept form for each line, plugged the numbers in from the each of the lines and solved the equation in slope- intercept for both lines (showing the difference of the two slopes). That way we can see how the numbers on the line are represented in the equation and the slope of each line. Thank you for uploading and showing the basics
Hey, im confused. Slope is delta y over delta x, but to find delta y and x, what order do i subtract it? Like if the points are (-1,2) (-4, -5), what order do i subtract in? Would I do -5 - 2 or 2 - -5. The slope would be different based on which order i do. Please explain the order I should do it in.
y2 - y1 then x2 - x1
will be same irrespective of coordinates
How do u keep making everything so clear if you were a teacher everyone would get a hundred
Thanks
Oh! This video is really on time for me. Its our topic for maths
this dude got a nice voice
I like that there's a link to extra practice after watching the video. It solidifies concepts that were covered in the video
thanks for the lesson .... that was really helpful
This guys a Genius
Thanks
Do does that both graphes are increasing?
If the definition of slope that told us that " Slope is the numerical measure of steepness" So can we change "m = y2-y1/x2-x1 to m= x2-x1/y2-y1"?
Yeah I have a similar same question
Thanks so much you help me to understand well
This is great you have several series on integral and differential calculus and now you post a video introducing slope :L
Thank you so much
this helps me understand more
ThAnK YoU
Best explanation I heared!
This is awesome!!! Now I get it!!! Really wonderful way to explain this!!!
nicer expalanation
i love ur videos! pls keep posting them. im actually doing this stuff right now!!!!
i will starg to pass math again thznks
Not English though
pfffthahahahahahhahahahahahhahahahahahahahahahha lol
What is the slope when x is funtion of y
No clue what any of this stuff means, but it was an easy assignment so that’s cool
I know this is an old video to comment but I really want somebody to explain to me and answer as to how steepness as Sal puts in the video be defined as "how quickly a line increases or decreases"?? I do understand that slope is the magnitude of how much a line inclines or declines from the horizontal axis or the ratio of change in vertical axis witg respect to change in horizontal axis but the definition mentioned above as by Sal here confuses me. I fail to conceptualise and understand it..can't make sense mathematically. I'd really appreciate and be thankul if someone could /would offer some clarity and explain in mathematical context!:)
No ones answering because your wording is too complicated. I still don't understand what you don't understand.
@@shuntmint2432 ok😉
@@amisha25211 simply it's this: if the line runs further horizontal, then it will have a less steep slope. A line with a steeper slope with run further vertical. :)
More horizontal rise equals less slope, and more vertical rise equals more slope. That is how quickly a line decreases or increases - when it increases further, a larger slope upward is indicated. When it decreases quickly, that's indicating a slower and small slope range. :)
Hope that isn't too confusing. May not see this but felt compelled to give it a shot for anyone else who may come across this. :) Been out of high school a couple years but I still recall that much :3
what is the difference between the magenta and blue line?
thanks man i learned every thing
Thanks. That helped
Perfect 👍 also add .....slope of a straight line is the same at every point on the line ...but when it comes to a curve it changes
Bad lazy boy
Great Work !!! I really like your method of teaching !!!
pink*
My physics teacher told us to watch this as homework-
Ski slopes are always negative ;) otherwise you're not skiing lol the thing you ride on is where you experience the positive slope.
can't thank enough. i'm just soooooooooooooooooo grateful!
Thank you good sir.
An easier equation for the gradient is RISE/RUN for the graph.try it out,it's really helpful.
(Change in y)÷(change in x)
But what does slope one represents?
What device do you use to write?
dev1ce
how can someone write so well on a laptop!
Avigat Gupta he uses a sketchpad with a pen
@@rayanekouni5032 But his cursor is moving, if he used a pen then how would his cursor move
It’s a special one watch salman khan 60 minutes episode and you’ll see
I still don’t get it :(
felt that
Me too I’m crying cause I’m gonna do a quiz
It has something to do with height or depth or angles? 😢
Just like velocity and acceleration.
As acceleration or deceleration is constant change in velocity,(i assume it to be constant, when it might not be constant in all cases)
Similarly slope is constant increase or decrease in height or depth when you're moving in the vertical direction or mapping something that has height of depth related to the point where you're standing.
Well even i don't really know what slope is 😂
But as far as I understand for example if I'm standing outside a 3 story building at a distance 50 m and the height of the building is 20m, now i have been given a job of connecting a cable from top of the roof to the ground point where I'm standing.
Now calculate the length of the cable or rope which will be connected from roof to that ground point you're standing at and calculate the slope?
A²+b²= c² , 2500+400 = 2900 c=√2900 = 53.85 something metres long cable.
The slope is how much metre it is elevated per 1 metre (unit metre) of the horizontal distance. So slope= total height(or depth) of the vertical object divided by the total distance(on the horizontal plane) you're standing from that object = 20m /50m = 0.8 m
Slope is always more than 0 if you're not standing on the object or are parallel to the top point of the object or you are inside that object, in these cases the slope will be zero 0,
Like if you're standing on the roof of that building the slope at that point is zero, or if you're standing inside the building the slope again is zero.
Slope is nothing but a ratio of vertical distance vs horizontal distance between any two points in a (x,y) plane where x is horizontal axis and y is vertical axis.slope is steepness
This is all i understood about slope , i don't know if it's right or wrong, 😶🌫️😶🌫️
it's ez
Someone said that Someone else math video's are better but i think this is
I'm going to need to watch this video a couple more times.
Uno no amigo
🙏 gracias
The other week my teacher explained this to us it took her 2 classes
Not all teachers are created equal. The derivative is the next level of slope :)
this really helped me in algebra, thank you!
I think im slow (witch isn’t a bad thing) but I have to watch this a few times for me to understand it right and fully. Im just so bad at math yet I want to be good at it I want to understand it but I just can’t :(
- 8th grader
Yes but on the Khan academy test it doesn't give you those two points! Graph the slope is the name of the test.
I thought it was y=mx+b
Que????🤔🤔🤔
Could have put this up a few weeks ago when we were doing slope in class...
he doesnt know when you learn things your so dumb
I still Get it I’ll never understand I’m crying because I have a quiz and I still don’t understand
I pray you did well
I failed but it’s ok
@@andersa222 this stuff is ALOT I found it difficult myself for yrs! but sorry to hear that, if you're having issues with solving the formulas try referencing some videos that help you with distributing properties because its alot of that in these linear equations
@@andersa222 and these Khan Academy videos he does a good job giving you visual representation of what he's trying to explain so try to really pay deep attention to the parts where he's graphing points cuz that makes it a bit easier once you see the lines on the graph
@@SoloACE88 thank you you for caring 💖
to be honest , i've always found it easy to learn from this guy,
but unfortunately not for this time
i learned the slope before and i forgot it
but when i tried to learn it here again i was struggling to learn it
this could be the worst explanation of slope i've ever heard
tbh i found it easy to understand but everyone learns differently
the slight roughness in his voice i-
T pose Fellas
I still don't understand what is this
??????????????????????????????? i don't understand
heh 600 like
Still don’t understand and I have a major test 😐
same lol
lol, no cap
ɪᴍ ɪɴ ᴛʜᴇ ᴍɪᴅᴅʟᴇ ᴏғ ᴄʟᴀss ᴀɴᴅ ɪ ᴅᴏɴᴛ ᴋɴᴏᴡ ᴡʜᴀᴛ ᴀ sʟᴏᴘᴇ ɪs
Luc Attia -_-
why is this so confusingggg
Whio would
Hey! What are you doing here? Do your work
wasn't helpful enough for what my school was teaching
This is stupid and makes no sense at all