A coordinate is (x , y)
They gave you: (2 , ?) you know x is 2, and now you need to it's y-coordinate
2x - 3y = 4 Since you know x is 2, you can plug in 2 for "x" in the equation
2(2) - 3y = 4
4 - 3y = 4 Subtract 4 on both sides
4 - 4 - 3y = 4 - 4
-3y = 0 Divide -3 on both sides
y = 0 (2, 0)