PLEASE HELP Provide the missing statements and reason for the following proof:
Given: Line m is parallel to line n
Prove: < 1 is supplementary to < 3

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3