Line p passes through points (-1, 2) and (-3, -4). What is the slope of a line perpendicular to p

Guest Oct 2, 2020

#1**+1 **

First find the slope:

Change in y = 2 - (-4) = 6

Change in x = -1 - (-3) = 2

**Remember to subtract in the correct order... if you use y _{1 }- y_{2}, then you have to do x_{1 }- x_{2}.**

**Another note, the order in which you subtract (y _{1 }- y_{2 }or y_{2 }- y_{1}) does not matter.**

The slope: 6/2 = 3

To find a parallel slope, you need to remember that it's negative, then reciprocal. In this case:

3 => -3 => -1/3

Weiart000 Oct 2, 2020