PLZ HELP ME, do all 4 ill give brainlist.

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 .

Which of the following shows the length of the third side, in inches, of the triangle below

Ineed to find the answer to number 2