Interpret Slope and Y-Intercept

Johnny has to pay $15 for a large pizza and 1.50 for each topping.  What is the meaning of the y-intercept?

• It cost 1.50 per topping
• It cost 1.50 for unlimited toppings
• It cost $15 for a large pizza
• It cost $15 for a large pizza with no toppings

Tags

CCSS.HSF.LE.B.5

Leslie cleans the barns for the horses.  Her time spent cleaning can be modeled by the equation y = 15 x + 30, where x represents the number of stalls that contains horses.  What is the meaning of the y-intercept?

• The time it takes to clean one horse
• the time it takes to clean one stall
• the time it takes to clean an empty barn
• the times it takes to clean each of the stalls with a horse

Tags

CCSS.HSF.LE.B.5

An employer uses the equation
 y = 9x + 100 to determine how much to pay his employees for the holidays.  In the equation, y is the total money paid and x is the number of hours worked.  What is the meaning of the y-intercept?

• the amount of hours need to earn overtime
• money earned each hour
• a pay bonus for employees
• the pay for a really good work

Tags

CCSS.HSF.LE.B.5

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 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

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 the height of a burning candle.  What is the meaning of the slope?

• the time it takes to burn the entire candle
• the change in the height of the candle each hour it is burning
• the different heights of the candle
• the original height of the candle

Tags

CCSS.HSF.IF.B.4

Dona plays a game with her brother.    The equation that models each person's score is y = 30 x + 75, where y is the total points and x is the number of games a person wins.  What is the meaning of the slope?

• the number of games won
• the amount of points that a player begins with
• the change in points for each game a person wins
• the number of points needed to win the game

Tags

CCSS.HSF.LE.B.5

The lawnmower can hold 7 gallons when it is full.  The equation y = -2x + 7 models the amount of gas in the tank when I mow the entire yard x number of times.  What is the meaning of the slope?  

• the gallons of gas used every time I mow the entire yard
• the amount of gas the lawnmower can hold
• the amount of gas need to mow the front yard
• the change in the amount of gas

Tags

CCSS.HSF.LE.B.5