Hello, Anemori!

I have a rather sloppy proof . . .

True or False?

Every system of two conic equations whose xy-term is nonexistent

has at most 4 points of intersection. . . True!

We have two conic equations: .

Solve [1] for

. . Quadratic Formula: .

Substitute into [2]:

. . .

This simplifies to ain . . . which has at most 4 roots.quartic