The equation stands for a straight line with a slope of -3 and a y-intercept of 2.
Points on the line may be obtained by assigning a value to x, and then evaluating y according to the equation. For example, a point with x=0 gives y=-3(0)+2=2, therefore the point (0,2) is on the given line.
Similarly, for x=1, y=-3(1)+2=-1, or (1,-1) is also on the line.
Continue in the same way, assigning different values to x, you will obtain as many points as you need that lie on the given line.