Provide three points on a graph for the equation y = -2/3x + 4.
I have the points (0, 4) and (6, 0).
Do you have any idea what a 3rd one might be?
Ther are an infinite number of possibilities. Just pick any x you like (except for the two you already have) and compute the y for that point, using the equation.
For example, if x = 3, y = -2 + 4 = 2
You could also pick any y and compute the x, using x = (3/2)(4-y), which is the same function, rearranged.