There verticles of a rectangle are shown on the grid what are the coordinates of the missing vertex 3,5,6 Help it's 100 points

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?