Question

line q passes through points (10, 6) and (1, 2). Line r is perpendicular to q. What is the slope of line r?

Answer 1

slope of r = -9/4

slope of Q = 4/9

Explanation:

x1 y1 x2 y2

10 6 1 2

(Y2-Y1) (2)-(6)= -4 ΔY -4

(X2-X1) (1)-(10)= -9 ΔX -9

slope= 4/9