Find the value of each of the following

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

When you answer this can you explain

What is not true about kl and mn? what is mn? (show )