Help me with this pls 10 points

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

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

I’m stuck on this equation, anyone got the answer?