A3C Key Features of a Linear Function Quiz 2

A holiday meal costs $12.50 a person plus a delivery fee of $30.  Which equation represents the amount a holiday meal costs, including delivery, for x people?

• y = 30 + 12.5x 
• y = 12.5 + 30
• y = 12.5 + 30x

Tags

CCSS.6.EE.C.9

The graph represents the money in a savings account.  What is the meaning of the y-intercept?

• The initial deposit was $30
• $30 is added to the account each week
• It took 30 weeks to same enough money to open an account
• not enough information

Tags

CCSS.HSF.LE.B.5

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.HSF.LE.B.5

The graph represents gasoline consumption when driving a certain distance in km.  What is the meaning of the slope?

• The tank started with 50 L of gasoline
• the amount of gasoline consumed per km driven
• the distance it takes to lose a Liter of gas
• the gasoline is leaking because the slope is negative.

Tags

CCSS.HSF.LE.B.5

Janice is saving money for retirement. The equation y = 500x + 12,000 models her retirement savings where y is the total she has saved in dollars, and x is the number of months.

Interpret the y-intercept.

• Janice started with $500 in her account

• Janice started with $12,000 in her account

• Each month, Janice saves an additional $500

• Each month, Janice saves an additional $12,000

Tags

CCSS.HSF.LE.B.5

A strong cold front blew through during the night.  The temperature outside began to drop rapidly.  The graph shows the temperature at each hour after the cold front blew through.  What is the rate of change of the graph?

• 2.5°F per hour
• 0.2°F per hour
• -0.2°F per hour
• -2.5°F per hour

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6