Question 65 - Mathematics Practice Test for the ACT

Which of these are perpendicular to each other?

A: \(-\frac{6}{5}x + \frac{2}{5}y = \frac{12}{5}\)

B: \(\frac{1}{3}x + y = 9\)

C: \(-\frac{12}{5}x + \frac{3}{5}y = -\frac{6}{5}\)

D: \(-\frac{1}{4}x + y = 4\)