Hello, myoplex11!

The graph of a quadratic function has x-intercepts -1 and 3

and a range consisting of all numbers less than or equal to 4.

Determine an expression for the function.

The quadratic function is a parabola.

Sketch the given information . . .Code:| 4+ o | : | : | : | : - - o - + - + - - - o - - -1 | 3 |

Is that enough to get you started?