# Slader math homework answers

### Question:

What is the union of graphs?

### Answer:

Step 1

When the equation ax2+bx+c=0 is put on a graph, the roots are where the graph crosses the x-axis.

Result

The place on the graph where the x-axis meets is an intersection.

In graph theory, an intersection graph shows how the points where two sets meet are put together. Any graph can be shown as an intersection graph, but the kinds of sets that are used to show them as intersection graphs define some important special classes of graphs.