Find 100% when 12 is 10%

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

What is always true when two whole numbers are subtracted?