Slope and Y-Intercept in Context

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 each topping

• The starting cost is $15 for a large pizza with no toppings

An employer uses the equation

y = 9x + 100 What COULD be the meaning of the y-intercept?

• $100 bonus check

• $9 earned each hour

• 100 people every day

• the pay for a really good work

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

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 height before the candle started burning

• the change in the height of the candle each hour

• the rate at which the candle is losing height

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

• The cost will decrease by $1.40 per topping

• The cost will increase by $1.40 per topping

• The cost will increase by $1.90 per topping

• The cost will decrease by $1.90 per topping

What is the meaning of the slope?

• The cost to get into the fair is $5

• cost $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.

The function C(m)+0.75m+2.25

represents the total cost (C) you have to pay to take a cab m miles. What is the meaning of the SLOPE?

• The cost of the trip will increase by $0.75 per mile.

• You will have to pay $2.25 before you travel any miles.

• You will have to pay $0.75 before you travel any miles.

• The cost of the trip will increase by $2.25 per mile.

Mr. Thompson weighs 287 pounds. He plans on losing 3 pounds per week. Choose the correct model that represents this situation. W will represent weight and t represents time in weeks. 

• W(t)=3t+287
• W(t)=-3t+287
• W(t)=-3t-287
• W(t)=3t-287

What do you have to calculate for this key word.

Rate of change

• slope

• Y-intercept

What do you have to calculate for this key word.

Per

• slope

• Y-intercept