Unit 4 Lesson 1 Practice Problems

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function.

Identify the independent variable and the dependent variable in this function.

• I: Time Parked

  D: Cost of Parking

• I: Cost of Parking

  D: Time Parked

• I:Hours

  D:Dollars

• I:Dollars

  D: Hours

The relationship between the amount of time a car is parked, in hours, and the cost of parking, in dollars, can be described with a function.

Describe the function with a sentence of the form "_____________ is a function of __________________."

• Hours is a function of dollars.

• The time parked is a function of the cost of parking.

• The parking cost is a function of the amount of time a car is parked.

• Dollars is a function of hours.

The prices of different burgers are shown on this sign.

Based on the information from the menu, is the price of a burger a function of the number of patties? Explain your reasoning.

• Yes, every input has one output.

• No, there is an input that has two output.

• A,B

• C,D

• E,F

• G,H

Seven times the first number plus six times the second number equals 31.

• 7x+6y=31

• 6x+7y=31

• 31+7x=6y

• 31+6x=7y

Three times the first number minus ten times the second number is 29.

• 10x-3y=29

• 3x-10y=29

• 29-3y=10x

• 29-10x=3y

• A

• B

• C

• D

An airline company creates a scatter plot showing the relationship between the number of flights an airport offers and the average distance in miles travelers must drive to reach the airport. The correlation coefficient of the line of best fit is -0.52.

Are they correlated? Explain your reasoning.

• Strong Positive Correlation

• Strong Negative Correlation

• Moderate Positive Correlation

• Moderate Negative Correlation