Respuesta :

cdw2014
The answer is C.

Perpendicular lines have opposite reciprocal slopes. That means one is negative and the other is positive, and the fractions are flipped.
Kaikerscupcake
You just need to flip the sign and the numbers. 

-2/7= 2/7

7/2

So, "C" is the correct answer. 

I hope this helps!
~kaikers