Functions Review

Is this a function? Explain.

• Yes; it passes the horizontal line test.
• No; it is not a straight line.
• Yes; it passes the vertical line test.
• No; there is a line connecting the dots.

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

CCSS.HSF.IF.C.7

Is this a function?

• Yes it is a function because it passes the vertical line test.
• No it is not a function because it does not pass the vertical line test.
• Yes it is a function because it passes the horizontal line test.
• No it is not a function because it does not pass the horizontal line test.

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

• After 5 week the plant is 4 inches tall
• The plant grows at a rate of 5/4 inch per week
• After 4 weeks the plant is 5 inches tall
• The plant grows at a rate of 1 inch per week

Tags

CCSS.HSF.IF.A.2

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.
What does c(7) represent?

• A cost of $7 to ride the taxi
• The cost to ride 7 miles
• The minimum distance to ride a taxi
• The minimum cost of a taxi

Tags

CCSS.HSF.LE.B.5

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.
What does c(m) represent?

• Total Cost of a taxi
• Total Miles in taxi

Tags

CCSS.HSF.LE.B.5

Derek works at Subway making $9.25 an hour.  The function d(x)=9.25x tells us how much money Derek makes after x hours of working.  What is the meaning of d(4)=37?

• After 4 hours of work, Derek makes $37.
• Derek needs $4 more to have $37 total.
• After working for 4 days, Derek makes $37 total.
• After 4 hours of work, Derek now makes $37 an hour instead of $9.25.

Tags

CCSS.HSF.LE.B.5

Does this mapping diagram represent a function?

• No, because there are repeating input values
• Yes, because there are no repeating input values
• No, because an output is repeated

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

• {-7, -5, 2, 3, 7}
• {-7, 7}
• {1, 2, 3, 4, 5}
• {1, 5}

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the y-intercept?

• 7
• 0
• 1
• 2

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSS.ID.C.7