Explanation:
1. The table represents a nonlinear function because the graph does not show a constant rate of change.
2. x -2 -1 0 1 2, y 5 2 1 2 5 represents a linear function.
3. The coordinate plane with a graph drawn that passes through the points negative 2 comma 0 and 0 comma negative 4 and 2 comma 0 represents a linear function.
4. The graph represents a nonlinear function because the rate of change is not constant.
5. The table represents a linear function because there is a constant rate of change in the input and output values.
6. y equals two thirds times x plus 4 represents a linear function.
7. The equation represents a linear function because its graph contains the points (−1, −2), (0, 0), and (1, 2), which are on a straight line.