Slope-intercept form | Algebra I | Khan Academy
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- เผยแพร่เมื่อ 21 เม.ย. 2015
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Slope-intercept form
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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
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I hate algebra with a passion
me too sis
Wait til'you study Calculus.
Yah sure thing
its useless in everyday life
Same sis
This guy is the reason I'm not failing.
Same
Same
Fakts 😭
this is honestly too true I would fail math if it wasnt for this video...
OMG THE STAR FISHY
And in kindergarten, I thought school was fun :(
sir.lasagna same😭math was soooooo easy for me and then came this
Same...
Isn't that what everyone thinks these days....
Yeah
It's a government conspiracy to make us think that school is fun so that we will be submissive in the future.
I'm having a mental break down I still don't understand
same though,
Same😖😓😥😰😪💢💢
khan is too smart for us
Dylan James yea
Jae same sis
whats more impressive is how he's writing with a mouse. and it's so legible
He's using a touch pad. With an electronic pen
myrandmvids couldn’t agree more
idiot
@@hasaniqbal233 😂
Why is it moving around everywhere then
I never understood
I cried and had a mental breakdown
I've done that a couple of times when my math teacher put me in the spotlight when I raised my hand when she asked who still didn't understand and pressured me into forming it into a question when I tried telling her where she lost me.
Same
..I...my teachers is nice ,but she gives an unnecessary amount of work ;-;
sameee 😭😭😭
@@lemon-vy3mj same first day of class and she gave us 5 assignment of this and I still don't understand this
I’m gonna cryyyy I have a test tmrw and I don’t understand
Same
Why do u think im here 😭😭😭
what did you ever end up getting on that test?? You are a year older now.
Update
Same😭
When your teacher tells you have the test in two days and didn’t teach you anything in class
it tomorrow for me
i will take the free F
OMG my teacher did the exact thing 😂
@@DarkWhispers_OG F
Why tf is the fbi here wait wait wait so the fbi is learning slope intercept form??? Hmmm interesting
I lost you at “math”.
Moonheart :3 he hasn't said math yet and I'm 2 minutes in.
im in 7 mins in and he hasnt said math yet
@@kristen3715 its hard to believe you didn’t get the joke but are trying to lean this math
@@kristen3715 r/wooooosh
@@kristen3715 r/whoooooooooooooosh
Every time my teachers play khan academy, the entire class suddenly starts listening.. this guy is the reason half of my grade is passing :)
a common equation is y = mx + b.
m represents the slope. B represents the y-intercept, where the lines touch the Y-axis. So y = 2x + 3 means that the y-intercept is 3. the 2x means that the slope is 2 over 1. (Look at rise over run)
This equation, y = 2x + 3 is a slope intercept equation, because it tells you the slope is 2 and the y-intercept is 3.
But for something more complex they call it standard form, for equations like 2y - 2x = 6 where you have to turn it into slope intercept form.
Graphing it is relatively easy. if you get a negative slope, you graph the line so its going downward and night rising like a positive slope. The y-intercept is just where the line passes through the y-axis, so a negative y-axis doesn't make the line negative.
When a question asks "Does y,x solve for..." and it gives two equations, simply put in the number it says and sees if it's right. It's just a regular equation. For example, "Does 1,2 solve for y = 6x - 4?" You put in 1 for x and 2 for y. So you can rephrase the question to be "Does 1,2 solve for 2 = 6 - 4?" and it does. However, if you input "2,1" the input would result in "1 = 12 - 4" which isn't true.
For problems where the slope isn't said, just assume it is 1, or a perfect square. Example y = x - 4. The slope is 1 and the y-intercept is -4.
I hope this helps. I went through a bunch of information because learning it all together makes much more sense. The logic makes it all tie in together.
Can you explain why exactly "M" is the slope in this equation ? As in, how it is the slope ? Good explanation, though.
@@santoshsharma-or4zu it means something in French I think Monet or something and that means rate of change.
Hope this helps!
@@-MissSiri- Thx.
Nice one
Then tell through graph how find the slope through graph like I don't get the point of run and rise
My dumb school put me in algebra when i am in the 7th grade. Now i'm stuck with this mess.
SAME
In a science curriculum, it is like that, I think, It happened to me😐
I had pre-algebra in 7th.
I’m in 7th grade not in algebra and I still have to do this
Sam HD I started working on this mid 6th lucky you😂
this really went through one ear and out the other
2:04 That's what my mom said about me too.
Dominic Fung XD
lmao
Dominic Fung XDD
Lmao I wish I thought of that!
Wow
So satisfying watching him write with the mouse
How will algebra help people in the future. Like I get it if you want to be an astrophysicist or a data analyst, but how will this help you if you want to become something like a lawyer or doctor.
doctors need calculus. algebra is a needed base for calc
it doesn't just matter about your job, even though it is a lot about being your job, it's still useful to know algebra in certain situations
Freedom2234 :p Name ten that aren’t related to jobs
Alany is weird with out a job you wouldn’t get money so you’d be broke not have a home and be poor
SerratedBlade I wasn’t saying that you shouldn’t get a job
Also Einstein dropped out of school so ha
i'm failing my exam tmrw, anyone with me?
Yup
yeha
Yup
Yea
Yup
currently balling my eyes out and watching while watching this 😚✌🏽😍
It's been a year with 45 likes but no one has asked why
Yup
( update: it’s been 2 years, i now understand and am ahead in math. i only have algebra 2 which i’ll take my sophomore year. i can understand why i didn’t understand lmao i was taking algebra 1 in 7th grade.)
@@audreyivy4335 glad everything is going well for you :)
You bring back so many fond memories of mine of how math can actually be fun. I am teaching my son using your methods. Great results!! Thank you.
Surprise! I still don't get it. 😭😓
Same. I don't even know whats going on :(
Oh well, im just stupid
@Purple Kitty
no your not
its just very complicating that's all😊
YourGurl Zuzu 🙂
A. Michelle Parkhill same
***** for you maybe...
I find it funny how he used the exact equation I’m working on 😂
My math teacher is really confusing thanks for getting rid of the whole confusion
So is Mine
same
Aroge Akhtar same I actually hate math
Aroge Akhtar agree learning this and I didn’t understand it in class
This vid showed up while I was trying to find the slope-intercept form from a graph so this "totally" helped a lot.
Anyone here from Mrs.Puffs Boating School
Mikes 🔥 stuff Nah I’m studying for my test at Prufrock Preperatory School.
Mikes 🔥 stuff Lmao I was just watching Spongebob
RadicalGam3r YT / Nevermore Reaper / Rub1x boi I love u heard season 3 will come out next year I can’t air so I read all the books other than the last one
NaCl_ Salt I can't wait either
wait are you spying on me??????
Khan Academy played a tremendous role in helping me get my GED ❤ I greatly appreciate it! 👩🏻🎓
Basically, the change in X will determine the change in Y.
i got no idea what you just said
No that’s not always the case
@@phobos5636 what he/she said
Zohirul Islam Jewel THANK YOU. all i needed 😭😭😭❣️
Huh
You have saved my life
IM LUCKY THEY CHANGED MY EXAM FOR MONDAY
Thank you so much!
I WILL NEVER GET THIS!!
Neither will I, and according to our teachers, if we don't learn algebra we'll both be janitors.
@Berkeley Nelson LMAO BRUH 😭
what
I feel your pain:((
lol i love these comments.
mood
Lol when I saw this comment I’m laughing so hard
i guess ur in univeristy now?
im in pre-algebra but we learn alot of topics that are taught in algebra too since were in a more advanced class. this helps too and khan academy has always been very helpful
Why is the graphed slope a negative 2 when the y value was 3 or 5? The y intersect increased by two, or 2, so why was the x value graphed as a negative, sloping to the left (-2.5) rather than to the right (2.5) on the x line?
Dang dude your voice is so cool for horror stories and people who like horror will definitely subscribe to you dude make a channel I swear u won't regret it even corpse husband (a utuber) has the exact same voice as u
Well... Math is a little terrifying.
iSlayy7 🤣🤣🤣
this guy will never make a horror yt channel 😂
Mahershala oh.. . He already has
PapiGucci GT he sounds like Mr.nightmare
This saved me from failing my cyber class. Thank you so much!
My teacher uses this guy for math
his name is Sal
same here too Mr.1 year earlier
My teach. Did to
Most do, it's a good way to learn after class
he's from the website khan academy
Thanks, you explain really well, my teacher just runs through the textbook and she doesn't explain it, i understand how to do this concept now. THANKS
Samson Samuel SAME...
*concept
Hey try having a coach for a teacher
what program is used in this video? i want to use it for online tutorial classes
i thought I was starting to understand this until he did that second equation
Honestly my dad is teaching me now, cause he was a 100 student. but I suck. Literally, I'm at the verge of crying, and he's yelling now frustrated with me. Gotta hold back the tears
I hope it gets better for you! :(
F
I hope you are fine bb
I love how this dude totally sounds like Jeff Goldblum.
No, not really
This is gonna help so much with my exam at Prufrock Prep tomorrow, thanks!
This is a much better explanation than any teacher I've had between grades 7-12.
this helps me so much for algebra I seriously this is my life saver
How does this dude have so many videos? It's amazing like you have a video on everything
This helped a lot! My math teacher recommended your channel to me and now i completely get it! ty :D
Found the video, like all of your others so far, very helpful.
Got a test in an hour, just needed a refresher course and now I'm good! 👏👍
Did you pass?
@@theflitcher3763 Yes lol I don't remember the test at all though. I graduated highschool now.
Why do we need this in life again?
Thank you! I was having trouble with this!
Studying for my TEAS test and trying to dust off my math. This video was so refreshing. I couldnt under stand the testing sites walk through, but this helped so much! Thanks!
Trying to finally understand this when I have a test this morning
BRO SAME RN😭👎
i have one first hour tomorrow and it’s 12 in the morning😭
I have always Like math since I was a boy. I enjoy the educational videos to refresh my memory
As a father these videos are the best tool we could ever have.
Thank you so much
What are you now are you girl
or a grown man +خالد العتيبي
The most easy way by which a math can be solved is shown by this video completely. Really felt benefited. Thanks. & keep continuing.
This guy has saved me both in school and now in work
Anyone here because they have a test tomorrow and is studying last minute. *Cries in Algebra*
I was happy when I found out I got in pre-algebra
now I’m not sure anymore -,-
My son got an A+ on his slope quiz thanks to you khan academy!
Thank you for such a clear and easy to understand explanation.
Simply amazing! Being an MSc. student, it's fun to watch your videos and honestly, these are of a great help in working on my assignments. Keep up the good work Sal and team!
My mom got sooo mad at me while she was teaching me this for 3 hours and i still don’t understand 😭😭😭
Finally I got it!! Thank u Sal! Hats off to Khan Academy 🤓
pretty intuitive! thank you!
can you do a video for fractions I don't understand how you graph y=3/4x+1
I’m ded. Sorry looks like I ain’t passin math this year :’D
Did you pass?
@@ninjakid8303 Y e a h - 💀 sad.
I used to not like Algebra ... not any more! Thanks!
Khan academy is the only thing i use to study, thank you for existing.
Thanks man, every day after school I watch these videos. I love math and science and take my advanced math seriously, thanks to you I am ahead of the game!
How are you doing buddy?
@@wallflowerboy5088 im better than i was 6 years ago i can tell you that.
When you have to watch the video multiple times 💔💔💔 lmao why can’t my teacher do her job
Lol, my teacher is confusing
mine cant do their job either💔
When you don’t go to the google meet in 3 days and this is what the class did 💀
Dude, you explain things so well
Thank you for videos sir...it's really helpful 🙏😊
My teacher said you can help me on anything. You have failed me
Khan dude: is going to look like....
is going to look like...
gona look somthin like...
is gonna look like...
me: "wakes up"
also me: wth is goin on
Great video! Helped with my final
I was not understanding the slope-intercept form but this helps a lot. thanx
I'd wish youd get straight to the point but people learn differently I guess
FishyScribbles exactly, he literally could’ve just graphed the equation straight from the get go
Im still confused and semester exams are on monday
just yasje what happend
Ima try applying this on my online seatwork wish me luck Bois
I have state testing coming up and I totally forgot how to do this. Video was really helpful thanks
Whyyyyyyy is this so freaking hard!!!!!!!!
Someone help me
This is what I get for not paying attention In class
Whenever he explains something and I get it I get really happy
thanks for the explanation! hopefully this will help me with EQAO
This is gonna save me during the PSAT xD
Daniel Kun my dude same
I see all of the comments saying, "I'm having a mental breakdown." Trust me though. I am in Kumon H 155 math, which means I am getting into grade 9, and 10 mathematics. Yet, I am only a grade 7.
Also studying grade 10 - college physics. If I can do it, I think a lot of people can!
Mountain Lion that’s tough
this video explains the general concept of math well
Thanks for simplifying hard math
I have passed my grade 8 test with confidence
I learned more here than what my teacher explained in two weeks
Bet you don't even understand
Why do we even have to learn this it’s not like where gonna use this in real life 🤦♂️
This is probably used for building, like for creating buildings, this is really useful when you get those type of jobs, but yeah there's no point when you don't get jobs like those.
Everything uses algebra lol, the only math that's useless is calculus
And you probably won't say the same thing to history
Thank goodness Khan academy exists. If this didn't exist I'd be failin maths.
Thank you for the help!!
What if they give you a fraction tho
EdgySketties to devide by a fraction multiply by the reciprocal of that fraction. and youtube slope intercept with a fraction
You can also do rise for the numerator and run for the denominator
Well then your doomed if they give you a fraction...
Still *confused*
Thanks man, that really helped me a lot.
This video made me cry from humanity’s sheer beauty
Mr. Oliveira is confusing, thank you!
MilkPocket I had a math teacher named Mr. Oliveira too!
its aite its just gets freaking confusing
thank you so much all my homies love khan academy 🙏🙏🙏🙏🙏
It actually helped, thanks!
Algebra II this year, I’m doomed
Lol
Why can't u be my teacher I understand you moe
More
Jesus Roque But.......He is not a moe..........
Something's called a typo. No one likes a grammar nazi
really i understand it easy way bcuz you know it's little difficult and you need perfect teacher to teach you awesome love( khan academy) I ALWAYS WATCH AFTER SCHOOL BECUZ ITS most helpfull for me and easy way u figure out wat to do thanks khan academy. i appreciate really
God bless you, i understand now.