Question

Line g passes through points (1, 1) and (10,9). Line h is perpendicular to g. What is the

slope of line h?

Answer 1

-9/8

Explanation:

Slope m = (y2-y1)/(x2-x1)

using (1,1) and (10,9)

m = (9 - 1)/(10 - 1)

m = (8)/(9)

m = 8/9

slope of line g is 8/9

Perpendicular lines have slopes that are negative reciprocals of one another

so slope of h is -9/8