Function Unit Review

Which function is best represented by the values in the table?

• y = 4x

• y = 4x + 1

• y = 2x

• y = 2x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The function f(x) is defined by the set of ordered pairs

{(5, -2), (-6, -2), (3, -2), (4, -2)}

What are the domain and range of f(x)?

• Domain: {-2}

  Range: {all real numbers}

• Domain: {-6, 3, 4, 5}

  Range: {-2}

• Domain: x > -6

  Range: y = -2

• Domain: {-2}

  Range: {-6, 3, 4, 5}

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Which set of ordered pairs represents y as a function of x?

• (-9, 2), (0, 6), (1, -2), (-3, 6)

• (-1, 0), (4, 3), (-7, -3), (-1, -8)

• (3, 2), (-4, -2), (3, 1), (-4, 1)

• (5, 4), (2, 3), (1, 1), (2, 4)

Tags

CCSS.8.F.A.1

A holiday meal costs $12.50 a person plus a delivery fee of $30.

• y = 30 + 12.5x 
• y = 12.5 + 30
• y = 12.5 + 30x
• y = 30 - 12.5x

Tags

CCSS.6.EE.C.9

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20
• 24
• 44
• 4

Tags

CCSS.6.EE.A.2C

A surf shop charges $85 for surfing lessons and $35 per hour to rent a surfboard. Anna paid $225. Find the number of hours she spent surfing?

• 1.9 hours
• 4 hours
• 1 hour
• 3.5 hours

Tags

CCSS.7.EE.B.4A

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

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

A function is defined as { (0,1), (2,3), (5,8), (7,2) }. Which ordered pair can we add the the set to keep it a function

• (0,2)

• (5,3)

• (7,0)

• (1,3)

Tags

CCSS.8.F.A.1

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)

Tags

CCSS.8.F.A.1