Solve for x: 2x + 7 = -9 - 6x

What is the reflection image of (5,-3) across the line y = -x?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.

If the function m(x) has the point (5,2) on its graph name a point that would be on the funtion m(5x)