How is the vertex form of an equation different from the standard form and what values change the shape of the graph?

The vertex form of a quadratic equation is expressed as ( y = a(x-h)^2 + k ), where ((h, k)) is the vertex of the parabola, while the standard form is ( y = ax^2 + bx + c ). In vertex form, the values of (a), (h), and (k) directly influence the shape and position of the graph; specifically, (a) determines the width and direction of the parabola, while (h) shifts it horizontally and (k) shifts it vertically. Changes to (a) affect the steepness, while altering (h) and (k) moves the vertex without changing the graph's shape.