The linear function below represents Brenda's monthly cell phone bill based on the number of hours she uses. what is her hourly rate?

for every hour used, it costs $12

Step-by-step explanation:

you can find slope by using rise over run, which would be 12/1

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

cosine

step-by-step explanation: