If shown a graph and asked for domain range and function how do you proceed?

Answer

Domain: Set of x-values. Range: Set of y-values. Function: If it passes the vertical line test, then it is a function.

Identify the type of graph it is. For example, is it a line graph or a curve graph?
Determine the domain, which is the set of all possible x-values that the function can take. This can be determined by looking at the x-axis of the graph.
Find the range, which is the set of all possible y-values that the function can take. This can be determined by looking at the y-axis of the graph.
Determine the function. This can be done by analyzing the behavior of the graph. If it passes the vertical line test, then it is a function.