Is it a function?

​Introduction to Fuctions

Multiple Choice

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Multiple Choice

Graphs

Is this a function or not a function? Use the vertical line test.

• Yes is Function

• No is not Function

Multiple Choice

Tables

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Choice

Mappings

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Choice

Tables

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Select

Mappings

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Select

Graph

Is this a function or not a function? Use the vertical line test.

• Yes is Function

• No is not Function

Multiple Select

Tables

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Select

Mappings

Is this a function or not a function?

• Yes is Function

• No is not Function

Multiple Select

Which relations represent functions. Select all that apply.

Multiple Choice

Which graph passes the vertical line test?

Multiple Choice

Which relation is a function?

• {(2, 3) , (1, 5) , (2, 7)}

• {(-1, 5) , (-2, 6) , (-3, 7)}

• {(11, 9) , (11, 5) , (9, 3)}

• {(3, 8) , (0, 8) , (3, -2)}

Multiple Choice

Which relation is a function?

Multiple Choice

Is the graph below a function?

• yes

• no

Multiple Choice

f(x) = x+7 find f(4)

• 11

• 12

• 9

• 10

Multiple Choice

For the function f(x) = -3x + 3 find f(0).

• 0

• -3

• 3

• -1

Multiple Choice

Find
f(-2)

• 8

• 2.5

• 3
• 6

• -3

Multiple Choice

Which of the following is true about

$$f\left(2\right)=5$$

• 2 is the input

• 5 is the independent variable

• there is no input

• 5 is the input

• 2 is the same as 5 and are both inputs

Fill in the Blank

Given f(x) = -2x + 10, find f(-3).

Multiple Select

Select all that apply.

f(x) is the same thing as ______.

• y
• x
• input
• independent variable

• output

Fill in the Blank

Given f(x) = x² + 2x + 5, find f(-3).

Fill in the Blank

If  $$f\left(x\right)=20-1.5x$$
evaluate  $$f\left(6\right)$$  

Multiple Choice

Given the graph, 

find:

$$f\left(x\right)=1$$  

• 5 

• 3.5 
  

• 4 
  

• 6.6 
  

• 2

Fill in the Blank

Given f(x) = -x + 3x + 1, find f(4).

Multiple Choice

Find

$$f\left(3\right)$$  

• 4

• 0.75, 4, 5, and 6

• 5

• 6

• 0.75

Multiple Choice

If  $$h\left(t\right)=\frac{1}{2}t+7$$  , find  $$h\left(8\right).$$  

• 8

• -11

• 11

• 2

• -2

Multiple Choice

g(15) = -1
Convert to a coordinate point.

• (15, -1)

• (-1, 15)

• (1, 15)

• (-15, -1)

• (15, 1)

Multiple Choice

If $$f\left(x\right)=5x-25$$ what is x if $$f\left(x\right)=10$$

• 5

• 25

• -25

• 7

• 0

Multiple Choice

For what value of t is H(-2) ?

• -1.6 and 1.2

• 5

• 2

• -7.2

• 3

Multiple Choice

In $$h\left(7\right)=10$$

which value is the independent variable?

• 7

• 10

• neither 7 or 10

• h(x)

• both 7 and 10

Fill in the Blank

$$If\ g\left(x\right)=-4x+7\ and\ h\left(x\right)=2x^2-3x+4$$

$$find\ g\left(-7\right)$$