Question

The point (1,-3) is on the line given by which equation below ?

Answer 1

Put the coordinates of the point to the line equation and check the equality.

(1, -3) → x = 1 and y = -3

A. y = -3x

-3 = -3(1)

-3 = -3 TRUE :)

B. y = x - 3

-3 = 1 - 3

-3 = -2 FALSE :(

C. y = 3x

-3 = 3(1)

-3 = 3 FALSE :(

D. y = -x + 3

-3 = -1 + 3

-3 = 2 FALSE :(

Answer: A. y = -3x