Question

What is the equation of thi line (2,2) (1,-2)

A.y=1/4x - 6
B.y=6x - 1/4
C.y=6x-4
D.y=4x - 6

Answer 1

D

Explanation:

`y = mx + b\\m = (y_2-y_1)/(x_2-x_1) = (2-(-2))/(2-1) = (4)/(1) = 4\\ y = 4x + b\\2 = 8 + b\\b = -6\\y = 4x - 6\\`