Question

The slope of a line that is perpendicular to a line whose slope is -2/7 is

Answer 1

The slopes of perpendicular lines are negative reciprocals.

Answer 2

Negative reciprocals are two numbers whose product is -1.

Answer 3

Given a number, to find its negative reciprocal do this:
1) if the number is not already written as a fraction, write it as a fraction (write the number over 1).
2) flip the fraction and change the sign.

Answer 4

7/2?