Identifying Linear, Quadratic vs Exponential Functions

Is the table linear or exponential?

• Linear

• Exponential

Uber charges an initial fee of $2 plus $0.75 per mile. What type of function is this?

• Linear 

• Exponential 

• Neither 

The iPhone X is valued at $1000 upon purchase. The value is expected to decrease by 14% each year. What type of function is this?

• Linear 

• Exponential 

• Neither 

Is the Equation Linear or Exponential?

• Linear

• Exponential

In the first year of an annual 5K run there were 120 participants. In the 2nd and 3rd year of the 5K run, there were 180 and 270 participants respectively. This situation is best modeled by a(n) ________________ function.

• linear

• quadratic

• exponential

• none of the above

Pick the equation that is exponential growth

• y=2(0.5)^x

• y = 0.5(2)^x

True OR False: All increasing exponential functions eventually exceed all increasing linear functions.

• True

• False

A tennis tournament begins with 128 players. At the end of round one, there will be 64 players. There are 32 players at the end of round 2 and 16 players remaining after round 3. This situation is best modeled by a(n) _________________ function.

• linear

• quadratic

• exponential

• none of the above

Given the following table of values, construct the function that represents the sequence.

• y = 3(4)^x

• y = 3x + 4

• y = 4(3)^x

• y = 4x + 3

Suppose you are saving for a new skateboard. You currently have $10 that you put in an envelope to save. Each week you put $5 in that envelope. If this were to be written as a function, how would 10 and 5 be represented?

• 10 would be the slope; 5 would be the y-intercept

• 10 would be the y-intercept; 5 would be the slope

• 15 would be the y-intercept

• 15 would be the slope