Question

Can anyone tell me if C is the correct answer?

Answer 1

Yes, I can tell you. Did you want me to? :-)

Answer 2

Is it correct?

Answer 3

If one line has the slope 3/8, and the other has the slope -8/3, the product of the slopes is (3/8) * (-8/3) = -24/24 = -1. That's what we want!

Answer 4

perpendicular lines have a product of slopes = -1, unless one of them is parallel to the y-axis (x = constant) , in which case its perpendicular will be parallel to the x-axis (y = constant)

Answer 5

Thanks a loooot :D