Math 7+ Unit 8 Quizizz Review

Select all functions that have (3, 12) s a solution.

• y=x²+4

• y=4x

• y=2x+6

• y=x²+3

• y=x³

Temperature is a function of time. What is the independent variable?

• Time

• Variable

• y

• Temperature

Tags

CCSS.HSF.IF.A.2

Water in a tank is increasing at a rate of 3 gallons per minute. What is the dependent variable?

• Tank

• Gallons

• Minutes

• Variable

Tags

CCSS.6.EE.C.9

Elena runs at 3 miles per hour. Jada runs at 6.2 miles per 2 hours. Lin runs at 2 miles per half hour. I run at 1.5 miles for 30 minutes. Who runs fastest?

• Elena

• Jada

• Lin

• Me

Tags

CCSS.6.RP.A.3B

My uncle has his own plumbing company. He charges $50 plus $25 for each hour. My cousin has another plumbing business. She charges $60 plus $20 per hour. If cost were your main concern, and you know your job will be 8 hours, who would you choose? My uncle or my cousin?

• Your uncle. After 8 hours his charges would total $250 and your cousin would charge $220.

• Your cousin. After 8 hours her charges would total $250 and your uncle would charge $320.

• Your uncle. After 8 hours his charges would total $425 and your cousin would charge $500.

• Your cousin. After 8 hours her charges would total $200 and your uncle would charge $250.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

This graph shows the distance Marge is from her front door. Select all the true statements using Marge’s graph.

• Distance is a function of time.

• Marge was standing still between 0

  and 10 seconds.

• The distance between 10 and 40

  seconds was increasing.

• Marge was the farthest from her front

  door at 40 seconds.

• Marge was back at her front door in

  60 seconds.

James is filling up his bathtub. This table shows a linear relationship between the amount

of water in the tub and time. Which of these statements is true?

• The water in the tub is increasing at a

  rate of 2 gallons per minute.

• The water in the tub is increasing at a

  rate of 5 gallons per minute.

• The water in the tub is decreasing at a

  rate of 2 gallons per minute.

• The water in the tub is decreasing at a

  rate of 5 gallons per minute.

Jahlil is taking a hike in the woods. Select all the true statements.

• Jahil was taking a break from F - G.

• Jahlil is walking the fastest from E - F at 4 feet/minute.

• Jahil walks for 6 minutes.

• Jahil continues to walk up the mountain from D - E.

A biologist is researching a newly-discovered species of bacteria. At time t = 0 hours, he

puts one hundred bacteria into a petri dish. The next day he counts 200 bacteria and the

next day, 400 bacteria. Is the population of bacteria a function of the number of hours? If so, is it linear?

• Yes, it is a function AND linear

• Yes, It is a function but NOT linear

• No it is not a function

• It is not a function, but it is linear

The graph below shows Mr. Smith’s ride to work. He drives to Starbucks to get coffee then

to the dry cleaner to drop off shirts. Finally, he drives to work. What is he doing at D?

• He drives to Starbucks.

• He stops to drop off his shirts.

• He drives to the dry cleaner.

• He stops to get coffee.

• He drives to work.