Question

for domain, scan your pencil to identify the x - values in which you are \touching\ the graph. and for range, scan your pencil to identify the y - values in which you are \touching\ the graph. and

Explanation:

Step1: Define domain

The domain of a function is the set of all possible x - values for which the function is defined. So, we look at the horizontal extent of the graph to identify x - values that touch the graph.

Step2: Define range

The range of a function is the set of all possible y - values that the function can take. So, we look at the vertical extent of the graph to identify y - values that touch the graph.

Answer:

To find the domain, identify the x - values where the graph exists. To find the range, identify the y - values where the graph exists.