Determining the Maximum and Minimum Values of Quadratic Functions Use the vertex (h, k) and a point on the graph (x, y) to find the equation of each quadratic function in standard form. a. (h, k) (5, 1) and (x, y) = (2, 10) f(x) = b. (h, k) (3,-3) and (x, y) = (-7,4) f(x)=