Sup.
Well, in my opinion, you have to substitue the value of X in the parabola.
Theoretically, if given a point of that parabola, it should satisfy the equation.
Therefore, from y = 6x²-13x+5
(from the answers sheet), the point is (1, -1).
therefore: -1 = 6 - 13 + 5
-1 = -2...