Eventhough i solved it i don't understand how to fill the colors

7x+8y=-18, 4x-9y=-3 solve the system of equations

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

If the discriminant if a quadratic equation is 4 which statement describes the roots?