Question

been stuck on this one for a bit, I need the work explained to me so I don't get stuck in this rut again.
If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n?

Answer 1

y varies directly as x —> y = kx

Situation 1: y = 180 when x is n. Plug in these y and x values and solve for k.

Situation 2: y = n when x = 5, repeat the process of solving for k.

Finally, you’ll have two equations for k, set them equal to each other and solve for n