FAST I NEED HELP PLEASE​

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 .

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

Aof 12 , we to a of 4 to on a .of 4 be ?