And i try and go to the measurement of the second angle is 5 less than the first the measure of the third angle is 5 less than twice the second find the measure of each angle

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?