Okay, so I'm doing some econ. homework and I'm supposed to draw a graph where the relative price of $P$ is $4 T/P$. Thing is that my brain stops working anytime I try to think about ratios.
I know that it's supposed to be a line connecting some point on the $T$ axis to another point on the $P$ axis, and one is supposed to be $4$ times bigger than the other, but I just can't figure out which.