Interpreting Slope and Y-intercept

Which of the following situations could be descried by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.
• A plumber charges $25 for a house call and $120 per hour.
• A teacher has 120 students. Her third period has 25 students
• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Tags

CCSS.HSF.LE.B.5

What is the meaning of the y-intercept?

• The hamburger will cost $1.90 without any toppings.
• The hamburger will cost $1.40 without any toppings. 
• The cost of the hamburger is $1.90 with one topping
• The cost of the hamburger doesn't change no matter how many toppings there are.

Tags

CCSS.HSF.LE.B.5

What does the slope mean in the context of the problem?

• The cost will increase by $1.40 per topping
• The cost will decrease by $1.40 per topping
• The cost will increase by $1.90 per topping
• The cost will decrease by $1.90 per topping 

Tags

CCSS.HSF.LE.B.5

What is the meaning of the slope?

• The cost to get into the fair is $5
• The total cost for the day will increase by $1.75 for every ride you go on.
• The cost to get into the fair is $1.75
• The total cost for the day will increase by $5 for every ride you go on. 

Tags

CCSS.HSF.LE.B.5

What is the meaning of the y-intercept?

• Mrs. Franklin's meal will cost $6.85 if she brings no grandchildren. 
• Mrs. Franklin's meal will cost $2.95 if she brings no grandchildren. 
• Mrs. Franklin's bill will increase by $2.95 for every grandchild she brings. 
• Mrs. Franklin's meal will decrease by $2.95 for every grandchild she brings.

Tags

CCSS.HSF.LE.B.5

Which statement matches the graph?

• 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.HSF.LE.B.5

The graph shows the number of newspapers delivered and total pay for Leona’ newspaper delivery job.

What does the slope of this graph represent?

• The cost per newspaper

• The total cost of 20 newspapers

• The number of miles Leona travels

• The cost per mile

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 slope?

• The ending height of the candle

• the rate at which the candle is losing height each hour

• the original height of the candle

Tags

CCSS.HSF.IF.B.4

 Neko loves to make cakes.  The following table shows how the number of eggs he has left changes as he makes cakes.
What is the meaning of the y-intercept?

• He uses 5 eggs for every 2 cakes.
• He started with 47 eggs.
• He uses 47 eggs for every 0 cakes.
• He started with 5 eggs.

Tags

CCSS.HSF.LE.B.5