Module 3 Relations and Functions

What is the range of the relation A = {(1, 3), (3, 5), (4, 6), (7, 9)}?

• {1,3,4,5}

• {1,3,4,7}

• {3,5,6,9}

• {1,3,4,5,6,7}

Which of the following statements is NOT true about functions?

• All functions are relations.

• All relations are functions.

• Functions are usually denoted by small letters.

• A function has no two distinct ordered pairs that have equal abscissas.

Tags

CCSS.8.F.A.1

A one-to-one function crosses a horizontal line how many times?

• 1

• 2

• 3

• 4

Which of the following relations are functions?

• f = {(2,3), (1,2), (4,7), (6,9)}

• g = {(2,9), (3,11), (5,13), (7,13)}

• h = {(5,9), (10,7), (11,12), (5,8)}

Tags

CCSS.8.F.A.1

Which of the following is a one-to-one function?

• books to authors

• true or false questions to answer

• student number to student

• learning module to student

It is a rule that relates values from a set of values to a second set of values.

• Set

• Relation

• Function

• Subset

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

It is a special relationship where each input has a single output.

• set

• relation

• function

• subset

Tags

CCSS.8.F.A.1

Evaluate f(x) = 5(x) + 2

if x = 5

• 17

• 22

• 27

• 32

Tags

CCSS.HSF.IF.A.2

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.

Tags

CCSS.8.F.A.1

Is this mapping a function or not a function? 

• Function

• Not a Function 

Tags

CCSS.8.F.A.1