Given a(1,7) b(8,4) and c(3,10) which coordinates will make line ab parallel to line cd

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

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

Factor and solve to find roots x squared -x - 90 =0