SOLUTION: if your ordered pair to find your slope is (-4,-1) and (-3,-2) what are the steps to find your slope and y-intercept?

Algebra ->  Linear-equations -> SOLUTION: if your ordered pair to find your slope is (-4,-1) and (-3,-2) what are the steps to find your slope and y-intercept?      Log On


   



Question 359244: if your ordered pair to find your slope is (-4,-1) and (-3,-2) what are the steps to find your slope and y-intercept?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Yes! good job!
Hi,
1)Use the ordered pairs given and the point-slope formula:
m+=%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29to find m
2)Once you have found m, substitute one of the order pairs into:
y = mx + b to find b
1)(-4,-1) and (-3,-2)
m = -1/1 = -1
2. y = -x + 6
Using (-3,-2) to solve for b
-2 = 3 + b
-5 = b
y = -x -5