Functions Lesson

Multiple Choice

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Multiple Choice

Which relationship could be represented by this scatter plot?

• As the number of muffins in a box increases, the price increases.

• As the speed of a car increases, the distance the car travels increases.

• As the population of a city increases, the number of schools in the

  city increases.

• As the number of daylight hours increases, the number of night hours decreases.

Multiple Choice

What type of correlation does this graph have?

• Negative

• no association

• positive

Multiple Choice

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

Fill in the Blanks

Multiple Select

• $$\left\{3,\ 7\right\}$$

• $$\left\{3,\ 7,\ 7\right\}$$

• $$3\ \le\ y\ \le\ 7$$

• $$\left\{0,\ 3,\ 7\right\}$$

Multiple Choice

State the range of the given relation.

• {2, 3, 7}
• {1, 4}
• {1, 2, 3, 4, 7}

Fill in the Blanks

Multiple Choice

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Multiple Choice

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Multiple Choice

Is this mapping a function or not a function? 

• Function
• Not a Function 

Multiple Choice

What is the range of the mapping?

• {1, 2, 4}

• {0, 1, 2, 3}

• {0, 3}

• {1, 4}

Multiple Choice

• $$\left\{15,\ 16,\ 17\right\}$$

• $$\left\{5\right\}$$

• $$15\ \le\ x\ \le\ 17$$

• $$\left\{5,\ 5,\ 5\right\}$$

Multiple Choice

.

• Function
• Not a Function

Multiple Choice

.

• Function
• Not a Function

Multiple Choice

• {-2, 3, 7}

• [-2, 7]

• {1, 2, 3, 4}

• [1, 4]

Multiple Choice

What is the domain of the relation shown in the table?

• {12}

• {6, 18}

• {3, 9, 15, 16}

• {13}

Multiple Choice

Does the graph represent a function?

• Yes

• No

Multiple Choice

Which number is not an element of the domain?

• 2

• 1

• 0

• 6

Multiple Choice

Which of these sets is the RANGE of the graph?

• {0, 6, 12, 18}

• {-2, 0, 2, 4}

• {-2, 2, 4}

• {6, 12, 18}

Multiple Choice

• Function
• Not a Function

Lets Practice

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

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

Multiple Choice

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

Multiple Choice

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{0, 1, 2, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

Multiple Choice

Does the table represent a function?

• Yes, there  is a repeated x-value. 
• No, there aren't any repeated y-values. 
• Yes, there are repeated y-values. 
• No, there is a repeated x-value. 

Multiple Choice

• Function
• Not a Function

Multiple Choice

• Function
• Not a Function

Multiple Choice

Is this graph a function or not a function? 

• Function 
• Not a Function

Multiple Choice

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Multiple Choice

Is this table a function or not a function? 

• Function
• Not a Function

Multiple Choice

Which of the following is a function?

• A

• B

• C

• D

Multiple Choice

Which is a function?

• W

• X

• Y

• Z

Multiple Choice

The following is not a function because...

• There are two values that equal 2.

• x = 10 and x = 40 has two values each.

• In the f(x) column, the 5 repeats.

• This table is actually a function.