Write an equation of the form y=mx for the pairs (0,0) and (1,4)

(0,0) (1,4)

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

y = mx + b

slope (m) = 4

(1,4) ... x = 1 and y = 4

now sub and find b, the y int

4 = 4 (1) + b

4 = 4 + b

4 - 4 = b

0 = b

ur equation is : y = 4x + 0 or just y = 4x