Question

What is the slope of the line that is perpendicular to the line that passes through the points (7, 6) and (3, -4)?

thanks :)

Answer 1

Perpendicular lines have slopes that multiply to -1.

First up, find the slope of the line determined by the points (7, 6) and (3, -4).

Answer 2

Directrix gave you a clue, here's another. Say we have Line A and Line B. We want Line B to be perpendicular to Line A. So Line B must have a slope that is the "negative reciprocal" of Line A. Negative reciprocal means you invert the fraction and change the sign. E.g. the negative reciprocal of 2 is -1/2.

Answer 3

Thanks to the both of you. Both have been very helpful. I appreciate it.

Answer 4

That's good but let's work the problem. Did you get the slope of the line segment whose endpoints were given?