Question

Find the rate of change and describe it in context. # of tickets 5, 6, 7, 8 Total cost 75, 90, 105, 120

Answer 1

The rate of change is a ratio that compares the change in y/change in x.

We can see that the y-values increase by 15 each time and

we can see that the x-values increase by 1 each time.

So the change in y/change in x is 15/1.

This means that for every ticket bought, you pay $15.

Answer 2

The cost of 1 ticket is 15 dollars

Explanation:

The rate of change is another word for slope

m = (y2-y1)/(x2-x1)

= (90-75)/(6-5)

= 15/1

The cost of 1 ticket is 15 dollars