Functions 10-21-20

Complete the function table for y = -2x + 1.

• -2(2) + 1; -2
• -2(2) + 1; -3
• -2(2) + 1; -1
• -2(2) + 1; 0

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The grocery store sells cantaloupes for $4.50 per pound.  Is the function continuous or discrete?  Explain.

• continuous; you cannot have a fraction of a pound when you weigh cantaloupes
• continuous; you can have a fraction of a pound when you weigh cantaloupes
• discrete; you cannot have a fraction of a pound when you weigh cantaloupes
• discrete; you can have a fraction of a pound when you weigh cantaloupes

Tags

CCSS.8.EE.B.5

The grocery store sells cantaloupes for $4.50 per pound.  Write a function to represent the cost, c, for the number of pounds of cantaloupes bought, p.

• c = 45p
• c = 4.5p
• p = 4.5c
• p = 45c

Tags

CCSS.HSF-BF.A.1A

Is the relation a function?

• yes, it is a function
• no, it is not a function
• not enough information to determine

Tags

CCSS.8.F.A.1

The deli in the grocery store gives each customer a free cup of coffee worth $1.50.  Write a function to represent the situation.

• y = 1.5x
• y = 15x
• x = 1.5y
• x = 15y

Tags

CCSS.HSF-BF.A.1A

Is the relation a function?

• yes, it is a function
• no, it is not a function
• not enough information to determine

Tags

CCSS.8.F.A.1

The deli in the grocery store gives each customer a free cup of coffee worth $1.50.  State the domain and range of the function if 5, 10, 15, or 20 customers get free coffee.

• D:  {5, 10, 15, 20}  R:  {7.5, 15, 22.5, 30}
• D:  {5, 10, 15, 20}  R:  {10, 20, 30, 40}
• D:  {5, 10, 15, 20}  R:  {10.5, 21, 31.5, 42}

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The deli in the grocery store gives each customer a free cup of coffee worth $1.50.  Is the function continuous or discrete?  Explain.

• continuous; there can only be a whole number of customers
• discrete; there can only be a whole number of customers
• continuous; there can be a fraction of a customer
• discrete; there can be a fraction of a customer

Tags

CCSS.HSF-LE.A.1B

Is the relation a function?

• yes, it is a function
• no, it is not a function
• not enough information to determine

Tags

CCSS.8.F.A.1

Give the range of the set of ordered pairs: (2, 11), (9, -3), (7, 21), (-8, 6)

• {2, 9, 7, -8}

• {11, -3, 21, 6}

• -8 < x < 9

• -3 < y < 21

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1