Question

Determine the slope of the line that is perpendicular to the line y = -7x - 12.

Select one:
A. 17
B. −3
C. −7
D. −12

Answer 1

None of these answers are correct.

Explanation:

Perpendicular lines have opposite and reciprocal slopes, which means that we take the slope and we flip it. After we've done that, we change the sign.

Since the original slope is -7, first we flip it and get -1/7. Now we change the sign and get 1/7. Therefore, the perpendicular slope of this line would be 1/7