Question

write slope intercept equation for the line that pass through (2,-7) and (4,-13)

Answer 1

y = m x + b

-7 = m(2) + b
-13 = m(4) + b
-----------------
6 = -2m
m = -3

-7 = -6 + b
b = -1

y = -3 x - 1

Answer 2

slope=(-13--7)/4-2 =-3
-7=-3*2+b
y intercept=-1
y=-3x-1