Chapter 2 Study Guide

What is the range of this function? (3,5) (-3,4), (1, 9), and (4,7)

• R: {-3, 1, 3. 4}

• R: {4, 5, 7, 9}

• R: {1,2,3,9}

The domain is the input or x- values of a table and graph.. True or False.

• True

• False

This is a function. True or False.

Hint: Use the vertical line test.

• True

• False

Which choice also represents the relation shown in the sets below as correct ordered pairs?

• {(1,2),(2,4)}

• {(2,1),(4,2),(6,2)}

• {(1,2),(2,4),(2,6)}

• {(2,2),(2,4),(2,6)}

Is the relation above a function?

• Yes, because it doesn’t show any repeating 𝑥 values in the domain.

• Yes, because every 𝑦 value in the range is different.

• No, because one 𝑥 value in the domain goes to multiple different 𝑦 values in the range.

• No, because there is an 𝑥 value in the domain that is equal to a 𝑦 value in the range.

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}
• {(2,7), (3,7), (4,7), (5,8)}
• {(1,-5), (-1,6), (1,5), (6,-3)}
• {(3,-2), (5,-6), (7,7), (8,8)}

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

Is this mapping a function or not a function? 

• Function
• Not a Function

• Function
• Not a Function