Model Linear Relationship with Function

Jacob is looking for a job delivering pizzas. Tino’s Pizza is offering Jacob $25 base pay and then $3 per pizza that he delivers. What would x and y represent in this situation?

• X: Total Money Made

  Y: Number of Pizzas

• X: Number of Pizzas

  Y: Total Money Made

• Variables should be numbers and not words.

Ms. Deppe has $150 in her savings account and saves $40 per month. Which equation represents the amount of money (y) Ms. Deppe has in her account as a function of (x) number of months?

• y=150+40

• y=150x+40

• y=40x+150

At the beginning of the summer, Jenna had saved $141. She will earn $32 per day of summer work. Which of the following equations represents how much money she will have, in all, if she spends nothing all summer as a function of the number of days she worked?

• y = 141-32x

• y = x + 141

• y = 32x + 141

• y = 141x + 32

Kiki wants to rent a bounce house for her daughter's party.  The cost, y, to rent the bounce house as a function of the number of hours, x, is shown in the table.  The initial set up fee for the bounce house is which of the following?

• $65

• $55

• $130

• $185

Dominoes charges $6 per pizza. The delivery fee is $4. Write an equation to model this situation.

• y = -4x+6

• y = 6x+4

• y = 1/6x-4

• y = 64x

y= 80x + 125 models the amount of money (y) in the register after selling x tickets. How much money does she have in the register before selling any tickets? 

• $125

• $80

• $205

• $45

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y=15x
• y=15x+80
• y=x+15
• y=80x+15

Where do you find the initial value on a graph?

• Where the graph touches the y-axis (x=0).

• Where the graph touches the x-axis (y=0)

• At the Origin

A pool is being filled at a constant rate. The amount of water in the pool is a function of the minutes it is being filled. What does y represent in this situation?

• time filling the pool

• the intial amount of water in the pool

• total amount of water in the pool

• how fast the pool is being filled

Find the slope using these two points: (24,6) (4,2)

• 5

• -5