On the number line, a bug P is moving in the positive direction from the point 0, and a bug N is moving in the negative direction from the point 0. The speeds of both bugs are constant. Both leave 0 at the same time, and four seconds later P has reached 12 and N has reached –8.

Question: If x is the point reached by P after t seconds, and y is the point reached by N after t seconds, express x and y in terms of t.

x=
y=


Please help! Don't write a bunch of nonsense for the points please!!!!!!!!!! I beg!!!!!!!!!!!!!!!