Write an example of a linear function and one example of a nonlinear function. Use x and y as variables.

Step-by-step explanation:

Example of a linear function: y = - 5x + 2. Note that both x and y are to the first power: y^1 and x^1.

Example of a nonlinear function: y = 2x^2 - x - 13. Here x is to the second power (which automatically makes this a nonlinear function).

Linear y=5x + 7

Non-linear y=x^2