Comparing Multiple Representations of Functions

Rich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.
y=3x+10
What does the y-intercept of the graph of this equation represent?

• The monthly fee

• How much Rich pays per visit

• The number of times Rich goes to the gym

• The total cost at the end of the month

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

Is the graph a function?

• Function

• Not a Function

Heather is a hairdresser and her customers pay $5 to reserve an appointment time and $7 for every hour Heather works on their hair style. What equation represents the total amount paid to Heather, y, after x hours of hair styling?

• y = 5 + 12x

• y = 12x

• y = 7x + 5

• y = 12x + 12

Which company has a greater initial value?

• Company Z

• Company S

Which table corresponds to the equation?

• 
• 
• 
• 

Which equation represents the table?

• 
• 
• 
• 

What is the equation for the table?

• y = 4x - 3

• y = -3x - 3 

• y = -2x - 3 

Here is a graph of a line showing the amount of money paid for a new cell phone and monthly plan. What does the y-intercept mean in this situation?

• The initial cost of the cell phone was $200.

• The initial cost of the cell phone was $300.

• The monthly plan costs $50 per month.

• The monthly plan costs $100 per month.

Here is a graph of a line showing the amount of money paid for a new cell phone and monthly plan. What does the slope mean in this situation?

• The initial cost of the cell phone was $200.

• The initial cost of the cell phone was $300.

• The monthly plan costs $50 per month.

• The monthly plan costs $100 per month.