The equation of the line that passes through the points (-2,0) and (0,8) can be expressed in the form y=mx+b. What is the value of m+b?
calculate the slope (y--y2)/(x1-x2) (8-0)/(0 - - 2) = 4
use one point to produce line the in point-slope form
(y-8) = 4(x-0) re-arramnge to y = mx+b form
y - 8 = 4x
y = 4x+8 m = 4 b = 8