7.3 Quiz: Intercepts & Slope in Context

The graph represents the height of a burning candle.  What is the meaning of the y-intercept?

• the time it takes to burn the entire candle
• the rate at which the candle is losing height
• the change in the height of the candle each hour
• the original height of the candle

Tags

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

The graph shows the weight of a bucket as it is filled with sand. What does the y-intercept represent

• the weight of the bucket when full

• the weight of the bucket when empty

• the speed at which the sand is added to the bucket

• the total amount of sand in pounds

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.3

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m = 50 + w

• w = 50m

• w = 50 + m

• m = 50 - w

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.B.4

The graph shows the temperature of the tank over time. Which of the following shows how much the temperature changes over time.

• slope

• x-intercept

• y-intercept

• none of these

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.3

A camp charges families a fee for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225

• y = 225x

• y = 225x + 625

• y = 625

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

What is the rate of change (unit rate) for the following graph?

• 80
• 20
• 40
• 160

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

Choose the best explaination

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

Tags

CCSS.8.EE.B.5

What does the y-intercept represent in this graph?

• Total amount owed

• Amount of weeks it will take to pay back loan

• How much is paid back each week

• None of the above

Tags

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3