Question

Line v passes through points (1, 17) and (9, 10). Line w is perpendicular to v. What is the slope of line w?

Answer 1

To find the slope of line v, divide the change in y-values by the change in x-values:

17 - 10 / 1 - 9
7 / - 8

Slope of line v = -7/8

Now, slopes of perpendicular lines are negative reciprocals of each other, therefore:

The slope of line w = 8/7

Hope this helps.