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
