Function Review

Choose the equation below that represents a nonlinear function:

• y = -6x + 4

• y = (1/2) x + 3

• y = 4x³ - 1

• y = x/5

Joe's Pizza charges $12.00 per large pizza plus a flat $4 delivery fee. Decide which of the following represents the relationship between number of large pizzas, x, and the cost of delivery, y?

• y = 16x

• y = 12x + 4

• y = 4x + 12

• y = 12x

Jake and Brendan were discussing these sets of relations listed below. Jake is trying to determine which relation set is a function. Identify the relation that contains a function.

• (0,4), (5,6), (5,8)

• (1,2), (2,2), (3,4)

• (1,2), (-1,3), (-1,8)

• (3,7), (3,6), (5,3)

The graph below shows Luke's distance from home. At what rate is he driving?

• 460 mph

• 92 mph

• 10 mph

• 46 mph

Function 1 is a linear function represented by the equation y = 3x + 2. Function 2 is represented by the attached table. Which of the following statements is true.

• Function 1 and 2 have equal slopes and initial values.

• Function 1 has a greater slope and initial value.

• Function 2 has a greater slope and initial value.

• Function 1 has a greater slope but a lower initial value.

• Function 2 has a greater slope but a lower initial value.

Is this mapping a function, and select the correct reason.

• It is a function because each input has its own output.

• It is a function because each output has its own input.

• It is not a function because an input may have more than one output.

• It is not a function because an output has more than 1 input.

Which equation is nonlinear?

• y = 2x + 4

• 3/5 + y = -4x

• y = 4x³

• 2x + 4y = 6

Look at the attached graph, and choose the correct choice

• The graph is increasing from interval E to F

• The graph is decreasing from interval C to D and D to E

• The graph is increasing from interval A to B and C to D

• The graph isn't a function

Use the attached graph to answer the following question: At interval E to F the graph is ....

• constant

• increasing

• increasing and then decreasing

• decreasing

Which superhero is immortal?

• Thor

• Spiderman

• Iron Man

• Black Panther