Question

6. What is the slope of a line perpendicular to the line whose equation is y = 2x -5?*

1) -2
2) 2
3) 1/2
4) -1/2

Answer 1

Answer: -1/2

You get y = 2x - 5, so the slope is 2. Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is -1/2.