What is the solution of the system of equations shown in the graph? PLEASE HELP WILL GIVE

The graph below could be the graph of which exponential function?

The coordinates of a, b, and c in the diagram are a(p,4), b(6,1), and c(9,q). which equation correctly relates p and q? hint: since is perpendicular to , the slope of × the slope of = -1. a. p - q = 7 b. q - p = 7 c. -q - p = 7 d. p + q = 7

Solve 2x+y=3 x+y=5 in substitution method