Thanks John - Now I need to figure out how to graph it, I will, but your method at 8:24 (LC/E) is new to me and that's why I wrote the initial "thanks." edit: guess my approach is wrong, I thought on the left of = was a coordinate pair and on the right of = was the slope from the coordinate pair to the solution coordinates
Greetings. The answers are (4, -2). We determine the values of X and Y as follows. We first add the given equations to get 3X =12 from which we determine that X equals 4. Thereafter, we substitute the value of X in either of the given equations to find the value of Y, using equation 2 gives 4-3Y = 10 and -3Y = 10 -4. That is -3Y = 6 and therefore, Y = -2 after dividing both sides by -3.
Thanks John - Now I need to figure out how to graph it, I will, but your method at 8:24 (LC/E) is new to me and that's why I wrote the initial "thanks." edit: guess my approach is wrong, I thought on the left of = was a coordinate pair and on the right of = was the slope from the coordinate pair to the solution coordinates
Greetings. The answers are (4, -2). We determine the values of X and Y as follows. We first add the given equations to get 3X =12 from which we determine that X equals 4. Thereafter, we substitute the value of X in either of the given equations to find the value of Y, using equation 2 gives 4-3Y = 10 and -3Y = 10 -4. That is -3Y = 6 and therefore, Y = -2 after dividing both sides by -3.
Used matrices to solve it.
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