Question

The lines graphed below are perpendicular. The slope of the red lineis-2 What is the slope of the green line A. B. C. -2 D. 2

Answer 1

We have to find the slope of the green line.

We know that it is perpendicular to the red line and that the red line is m=-2.

We also know that perpendicular lines have slopes that are negative reciprocals. Then, we can write:

$m_{\text{green}}=-\frac{1}{m_{\text{red}}}=-\frac{1}{(-2)}=\frac{1}{2}$

W