Help!! 5-8 questions

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

Need on this geometry question. explain how you did it.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps