Problems 79–88 are based on previously learned material. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.

Determine whether the graph of (x² + y² − 2x)² = 9(x² + y² ) is symmetric with respect to the x-axis, y-axis, origin, or none of these.