Line q passes through points (10, 8) and (8, 15). Line r is perpendicular to q. What is the slope of line r? Simplify your answer and write it as a proper fraction, improper fraction, or integer

Question

Line q passes through points (10, 8) and (8, 15). Line r is perpendicular to q. What is the slope of line r?

Simplify your answer and write it as a proper fraction, improper fraction, or integer

Answer 1

(10, 8) and (8,15)

slope = (15-8)/(8-10) = -7/2

slope of r, the perpendicular line is the negative inverse of -7/2 which is

2/7

just change the sign and flip the fraction upside down