Domain: list all x-values the graph includes
Range: list all y-values the graph includes
Look at the graph from left to right to find the domain
Include every x-value where the graph exists
Use open circles to exclude values
Use closed circles to include values
Use arrows to show the graph continues forever
Write the domain in interval notation if needed
Look at the graph from bottom to top to find the range
Include every y-value where the graph exists
Use open circles to exclude values
Use closed circles to include values
Use arrows to show the graph continues forever
Write the range in interval notation if needed