FA: Interpreting Slope & Y-Intercept

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the y-intercept of the scenario?

• Total # of feet hiked.
• Total # of hours hiked.
• # of feet hiked each hour.
• Initial altitude.

In order to join a gym, there is a $125 startup fee and a $45 monthly fee. Interpret the slope of the scenario.

• The startup fee.
• Total amount paid.
• The monthly fee.
• The # of months attending.

To start our Upper F hall lemonade stand, we spend $30 on lemonade mix and supplies, and we charge $1.50 for each cup sold.  Interpret the y-intercept of the scenario.

• # of cups sold.
• The price per cup.
• The amount spent on supplies.
• Amount of money earned in profit.

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.3

An airplane descending at a rate of 2,000 feet per minute and begins its descent at 30,000 feet above the ground.  What does the slope represent in this scenario?

• The maximum height of the plane.
• The plane's rate of descent.
• The plane's height at the beginning of descent.
• The total time the plane is in the air.

Suppose that the water level of a river is 34 feet and that it is receding 0.5 foot per day. Interpret the y-intercept of the scenario.

• Lowest water level of the river.
• The initial water level.
• The river's receding rate.
• The water level after 10 days.

For babysitting, Nicole makes $8.00 an hour and a $20 travel fee.  Interpret the slope of the scenario.

• Total # of hours babysitting.
• Total amount earned babysitting.
• Her babysitting price per hour.
• Her babysitting travel fee.

A car salesman earns $400 a week and 7% commission for each car sold.  Interpret the meaning of the slope.  

• The % of commission for each car sold.
• The guaranteed amount earned from the dealership. 
• # of salesmen at the dealership.
• Total paycheck ($).

At the local grocery store, milk is on sale for $2.50 per gallon.  Interpret the meaning of the y-intercept.

• There isn't a y-intercept.
• The price of milk per gallon.
• The total amount spent.
• # of gallons sold.

You are giving away all your clothes so that you can get an entirely new wardrobe.  You have 100 pieces of clothing, and you give each person 5 pieces of clothing.  What does the slope represent?

• # of people you give clothes
• Initial # of pieces of clothing.
• Total # of pieces of clothing you have left.
• The # of pieces of clothing you give each person.  

In order to join a yoga club there is a $100 annual fee and a $5 fee for each class you attend. What is the meaning of the y-intercept?

• The fee per class.
• # of classes attended.
• Annual Fee.
• Total amount spent on yoga.