Its about sat

Question

the grapg of a line in the x-y plane passes through the point (1,4) and crosses the x-axis at the point (2,0) the line crosses the y axis at the point (0,b) what is the value of b ?

Answer 1

(4 - 0)/(1 - 2) = 4/-1 = -4

 

0 = -4(2) + b

0 = -8 + b

b = 8