Grade 8 Unit 5 Lessons 1 - 7 Quiz

Select the function whose graph includes the point (3,9)

• y = 6x

Select ALL true statements

• Time is a function of temperature

• The lowest temperature occurred between 4:00 and 5:00

• The temperature was increasing between 9:00 and 10:00

• The temperature was 74 degrees twice during the 12 hour period

• There was a four hour period during which the temperature did not change.

Determine which scenario BEST matches the graph.

• It takes Elena 4 hours to walk 9 miles. She walked at the same speed for the entire 4 hours.

• Elena goes on a long walk and she walks 4 miles in 9 minutes.

• Elena goes for a long walk. The first hour she walks 3 miles at a steady pace, then she then stops for about 30 minutes, speed walks for another 30 minutes and then finishes her walk at a slightly slower rate then she started

• Elena goes for a long walk. The first part of the walk is up a hill, then she walks across flat land, then climbs a steeper hill. The last 2 hours of the walk she travels up another hill.

What was Elena's speed in miles per hour, for the first hour of her walk?

• 1 mile per 3 hours

• 3 miles per hour

• 1/3 mile per hour

• 1 miles per hour

What was Elena's speed in miles per hour, for the last 2 hours of her walk?

• 2 miles per hour

• 1 mile per 2 hours

• 5 miles per hour

• 9 miles per hour

During which hour of her walk did Elena stop walking and take a break?

• 0-1 hour

• 1-2 hour

• 2-3 hour

• 3-4 hour

This table shows a linear relationship between the amount of water in a tank and time. Which of these statements is true?

• The water in the tank is increasing at a rate of 2 gallons per minute

• The water in the tank is increasing at a rate of 10 gallons per minute

• The water in the tank is decreasing at a rate of 2 gallons per minute

• The water is decreasing at a rate of 10 gallons per minute

Lin uses an app to graph the charge of her phone over a period of 11 hours. How many hours after noon did Line start using her phone?

• 0

• 2

• 4

• 8

Lin uses an app to graph the charge of her phone over a period of 11 hours. How many hours after noon did Lin start charging her phone?

• 0

• 2

• 4

• 8

Lin uses an app to graph the charge of her phone over a period of 11 hours. While Lin was using her phone, at what rate was Lin's phone battery dying?

• 40% per hour

• 30% per hour

• 20% per hour

• 10% per hour