CA 1 Re-test

for the function f, f(-5) = 3, and f(3) = -2. If y = f(x), what is the value of y when x = 3?

• -5

• 3

• -2

• 5

Which statement is true for the function whose graph is shown?

• The domain is  $x\ >0$  

• The domain is  $x<8$  

• The range is  $y>0$  

• The range is  $y>3$  

 $f\left(x\right)\ =\ 2x+7$  

Find the value of x, when f(x)=17

• 41

• -41

• 5

• -5

Graph the linear function

• a.

• b.

• c.

• d.

The cost to rent a movie can be modeled by a linear function. The table shows the total cost of renting for different lengths of time. Based on the table which statement is true.

• The slope is 1.5. It represents the initial cost.

• The slope is 1.5. It represents the rate per night.

• The slope is 1.25. It represents the initial cost.

• The slope is 1.25. It represents the rate per night.

The table shows the daily high temperatures x (in degrees Fahrenheit) and the numbers of y of frozen fruit bars sold on eight randomly selected days. Which of the following is a reasonable equation to model data?

• 
  

  $y=3x-50$
  

• $y=-3x+50$

• $y=x-150$

• $y=-x+150$

The ordered pairs (-4, 7), (-2, 6), (0, 3), (-2, 1),(2, -1), and (4, 1) represent a relation. Based on the relation, which statement is true?

• The relation is a function.

• The relation is not a function because one output is paired with two inputs.

• The relation is not a function because one input is paired with two outputs.

• The relation is not a function because the rate of change is not constant

What is the domain?

• x = 2
• −∞ < x < ∞
• y = 2
• none of these

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the graph of the function rule?

• 
• 
• 
• 

Function or Not?

• Function

• Not a Function

Tags

CCSS.8.F.A.1