Interpret Slope and Y-Intercept in a Situation

The table represents a used car salesman's monthly salary including commission made on the sale of cars.  What is the y-intercept and what does it represent?

• The y-intercept is $850/car and it represents the commission per car sold.

• The y-intercept is $1500/car and it represents the commission per car sold.

• The y-intercept is $1500 and it represents the monthly salary before commission.

• The y-intercept is $2775 and it represents the monthly salary before commission.

Interpret the meaning of the slope of the graph below.

• $2 for every 1 mile driven

• $1 for every 2 miles driven

• 2 miles driven for $1

• 1 mile driven for $2

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

Interpret the meaning of the slope in the graph below.

• 2 cm of rainfall per hour

• ¹/₄ cm of rainfall per hour

• ¹/₂ cm of rainfall per hour

• 4 cm of rainfall per hour

Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.

y=0.5x+10

What does the slope of the graph of this equation represent?

• $0.5 per day

• $0.5 for each mile driven

• How much charlie paid for the Truck

• 0.5 miles each day

The table represents a used car salesman's monthly salary including commission made on the sale of cars. What is the slope and what does it represent?

• The slope is $850 per car and it represents the commission per car sold.

• The slope is $425 per car and it represents the commission per car sold.

• The slope is $1500 and it represents the monthly salary before commission.

• The slope is $850 and it represents the monthly salary before commission.

The equation c = 0.20t + 3.50 shows the relationship between the charge c in dollars for renting a kayak for t minutes.What is the meaning of the y-intercept?

• It costs $3.50 per minute to rent a kayak.

• For $0 you can rent a kayak for 3.5 minutes.

• Every 3.50 minutes, you have to pay $1.00.

• You have to pay $3.50 up front before using the kayak.

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

A T-shirt design company charges your team an initial fee of $25 to create the team's design. Each t-shirt printed with your design costs an additional $8. The equation for this situation is y = 8x + 25. Interpret the y-intercept in context.

• The additional fee of $8.

• The initial fee of $25.

• The additional fee of $25.

• The initial fee of $8.

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225

• y = 225x 

• y = 225x + 625

• y =  625