Function and Domains

Is this a function?

• Yes

• No

Is this a function?

• Yes

• No

Is this graph continuous or discrete?

• Continuous

• Discrete

Is this graph continuous or discrete?

• Continuous

• Discrete

Mario has an iTunes gift card worth $20.00. He uses the formula y=0.99x to determine the total cost (y) for the number of songs (x) he can buy. Does this situation have a continuous or discrete domain?

• Continuous

• Discrete

Raji joins a gym that requires a start up fee of $40 and a monthly fee of $10. The equation that models this situation is y = 10x + 40, where y is the cost over time and x is the number of months. Does this situation have a continuous or discrete domain?

• Continuous

• Discrete

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. This is represented by the equation c = 2h + 15, where c is the total cost and h is the number of hours. Does this situation have a continuous or discrete domain?

• Continuous

• Discrete

Is this graph continuous or discrete?

• Continuous

• Discrete

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

• Function
• Not a Function