Start by putting equations in y equals form. Add opposite sign x to the other side. Divide by coefficient of y. Y equals 7 minus 5/4X Y equals 5 minus 4/5x Y equals -3 plus 5/4X Y equals -6 minus 4/5x Perpendicular line is opposite slope. Have -4/5 so want 5/4 as slope. Only one is possible because of + sign. The answer is the third one. Mark as the best answer!