Answers (all in complete sentence):
12. A linear function because it goes at a constant rate of change.
13. A linear function because it goes at a constant rate of change.
14. A nonlinear function because it doesn’t go at a constant rate of change.
15. a. The missing y-value is 4.20 that makes the table represent a linear function.
b. y=1.4x is a linear funcation that represents the cost y of x pounds of seeds.
16. The table represents a nonlinear function because the change in the wavelength, x divided by the change in the frequency, y is not constant. Also, when the points from the table are plotted on a graph, they do not form a straight line.
17. The table represents a nonlinear function because the change in the height, x divided by the change in the steps, y is not constant. Also, when the points from the table are plotted on a graph, they do not form a straight line.
Hope this helps and answers your questions :)
