Question

what is the slope of a line perpendicular to the line containing Q(98,-55) and R(70,-69)?​

Answer 1

Answer:

Perpendicular lines have slopes that are the opposite of the reciprocal of each other. In this case, the slope of the first line is -2. The reciprocal of -2 is -1/2, so the opposite of the reciprocal is therefore 1/2.