What is the definition of a function?

Every input has only one output

Inputs have different outputs every time

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.

Ms. Brackemyer is collecting pencils. The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days. What is the meaning of p(8)=52?

After 8 days, Ms. Brackemyer has 52 pencils.

Ms. Brackemyer starts with 8 pencils and ends with 52.

Ms. Brackemyer starts with 52 pencils and gets 4 more every day.

Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

A company is selling bubble gum. The function g(x)=3x+4 tells the company how much to charge if someone buys x packages of bubble gum. Find g(8) and tell what it means within the context of the problem.

g(8)=28. This means that 8 packages of gum costs $28.

g(8)=8. This means that after 8 packages of gum, the company makes $8.

g(8)=42. This means that 8 packages of gum costs $42.

g(8)=24. This means that 8 packages of gum costs $24.

The graph shows the height (cm) of a candle, y , as it burns over x hours, what does the x-intercept (4.5,0) mean?

The candle is 0 cm after 4.5 hours.

The candle is 4.5 cm tall after a couple of hours.

The candle burns at 4.5 cm per hour.

Russel's height is tracked in this graph. What does the point (12, 3) represent?

Russel was 3 feet tall when he was 12 years old.

Russel grew 3 inches when he was 12 years old.

Russel grew 12 inches when he was 3 years old.

Russel grew 12 inches over 3 years.

Function w gives the weight of a cat, in kilograms, when it is m months old. Which statement represents the meaning of the equation w(7) = 4 in this situation?

The cat weighs 4 kilograms when it is 7 months old.

The cat weighs 7 kilograms when it is 4 months old.

The weight of the cat has been 7 kilograms for 4 months.

The cat weighs 4 kilograms when it is 7 years old.

1.3 test review

Authored by My Taylor

Mathematics

8th - 9th Grade

CCSS covered

Used 3+ times

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Antonio is getting ready for a bath and the bathtub is filling with water. The tub currently has 10 gallons of water and is adding 2 gallons each minute, m. Write a function rule that relates the gallons of water in the tub to the number of minutes that has passed.

Which is the function rule?

g=10m+2

m=10g+2

m=2g+10

g=2m+10

Tags

CCSS.HSF.IF.A.1

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Using the equation from the last problem: g=2m+10 fill in the missing value in the table.

Tags

CCSS.HSA.CED.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which table represents the function graphed above.

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.IF.B.4

CCSS.HSA.REI.D.10

CCSS.HSF.IF.C.7

CCSS.HSF.IF.C.9

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Find f(3)

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Find g(-2)

Tags

CCSS.HSA.SSE.A.1

CCSS.HSA.APR.B.2

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Find h(-15)

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Find g(3)+f(1)

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSA.APR.A.1

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1.3 test review

Antonio is getting ready for a bath and the bathtub is filling with water. The tub currently has 10 gallons of water and is adding 2 gallons each minute, m. Write a function rule that relates the gallons of water in the tub to the number of minutes that has passed.

Which is the function rule?

Using the equation from the last problem: g=2m+10 fill in the missing value in the table.