I need help with Geometry

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 .

Reflect the point (7,0) across the y-axis

Answer pls man im trying to get out of summer school