-1 - (-7) over 3 - (-1) = M
-1 + 7 over 3 + 1 = M
6 over 4 = M
6/4 = M
3/2 = M
Slope form M=y2-y1/x2-x2 M= -7 -(-1)/-1-3 M= -6/-4 M=3/2 So 3/2 is your slope Now use one if the pair points (3,-1) and slope to find b. -1=2/3(3)+b -1=2+b -1-2=b -3=b Y=2/3x-3