Answer:
Step-by-step explanation:
E(-1,6) & F(-2,-10)
[tex]Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\\ \ \ \ = \frac{-10-6}{-2-[-1]}\\[/tex]
[tex]=\frac{-10-6}{-2+1}\\\\=\frac{-16}{-1}\\\\= 16[/tex]
Slope of the line perpendicular to this line = -1/m = -1/16