Hello, mm99!

Here's one way . . .Can someone explain how to do sign graphs for inequalities?

Like: .

We have the graph of: .

This is an up-opening parabola.

We want to know when this graph is positive (above the x-axis).

Draw a sketch (or visualize it) . . .

The x-intercepts are

The graph is positive to the left and right of the intercepts.Code:| * | * | * | * * | * - - * - - - - - - + - - - - * - - -4 * | * 3 * | * * | |

Therefore: .