Question

Check please?

If you are finding the line perpendicular to x + 3y = 5, what is the slope of the perpendicular line? This is 3 right?

Answer 1

yes. it is 3 i checked.

Answer 2

Thanks :)

Answer 3

yes, because the gradient of that line is -1/3, meaning the gradient of the line perpendicular to it must be such that the product of the gradients is -1. It must therefore be 3 since 3(-1/3) = -1.