First, solve the given equation:
y-3 = 5(x+3) Original equation
y-3 = 5x+15 Distributed the parenthesis
y = 5x+15+3 Isolated y by grouping like-terms
y = 5x+18 Final equation in slope-intercept form
Then, you’d plug in the sets of coordinates. The first is (-3,3). X is -3 and Y is 3 because coordinates are written in (x,y) format.
(3) = 5(-3)+18
3 = -15+18
3 = 3
Since the first coordinates (-3,3) are correct, there is no need to try the other equations.
