In which quadrants are the points A, B, C and D of problem 5 located ?

In point A(2, 2), both x and y coordinates are positive. So it lies in the first quadrant.

In point B(-3, 0), y-coordinate is zero. So it lies on x-axis.

In point C(-2, -4), both x and y coordinates are negative. So it lies in the third quadrant.

In point D(3, -1), x coordinate is positive and y coordinate is negative. So it lies in the fourth quadrant.