Answer:
1. identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown
2. Linear functions are those whose graph is a straight line and linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y.
3. To see if a table of values represents a linear function, check to see if there's a constant rate of change. If there is, you're looking at a linear function.
