Find an equation of the line that passes through each given point and is
perpendicular to the line with the given equation.
19.-(-2, 0); y=-3x+7
20. (2, 5); 3x + 5y = 7
21. (0,-4); 6x-3y=5
3 1
22. (12, 6); ² x + 2 y =2