Which situation is not an example of a linear function?

A)
The distance traveled if a car is driving at a constant rate of 60 miles per hour.

B)
The cost of the bill if a cell phone company charges an initial fee of $25 plus $45 per month.

C)
The amount of cake each person gets to eat if a cake is divided equally among the guests at a party.

D)
The amount of time spent grading papers if a teacher grades one paper every 8 minutes and takes a 10 minute break.

Question

Which situation is not an example of a linear function? 


 








  
A)
  The distance traveled if a car is driving at a constant rate of 60 miles per hour.   

 
  
B)
  The cost of the bill if a cell phone company charges an initial fee of $25 plus $45 per month.   

 
  
C)
  The amount of cake each person gets to eat if a cake is divided equally among the guests at a party.   

 
  
D)
  The amount of time spent grading papers if a teacher grades one paper every 8 minutes and takes a 10 minute break.

anonymous · Answer

@KlOwNlOvE

anonymous · Answer

Think about the statements 
(linear functions aren't valid if it fails a verticle line test or has similar x values) if something travels at a constant rate would it have similar x values?

anonymous · Answer

or i should say would it stay at a consistant growth

anonymous · Answer

Equation for B would be y=45x+25
would this be linear?

anonymous · Answer

a