Rate of Change and Initial Value

Mr. Z is starting his own car club, there is a $30 join up fee and a $5 monthly fee. What is the rate of change?

• 30

• 5

What is another name for the initial value?

• origin

• x-intercept

• y-intercept

• rate of change

Select ALL that mean the same thing as the rate of change.

• Slope

• Unit Rate

• Constant of Proportionality (Only if proportional)

• Initial Value

Tim bought a new phone.  He paid $125 on the day of purchase, then $50 per month until it was paid off. What is the initial value in this situation?

• 50
• 125

Chicken Express sell boxes of chicken with varying numbers of pieces. They charge 40 cents for each piece of chicken, plus a fixed charge of 55 cents for the box. What is the initial value?

• $0.40

• $40

• $0.55

• $55

Chicken Express sell boxes of chicken with varying numbers of pieces. They charge 40 cents for each piece of chicken, plus a fixed charge of 55 cents for the box. What is the initial value?

• $0.40

• $40

• $0.55

• $55

Chicken Express sell boxes of chicken with varying numbers of pieces. They charge 40 cents for each piece of chicken, plus a fixed charge of 55 cents for the box. What is the initial value?

• $0.40

• $40

• $0.55

• $55

During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waffle cone, and $0.60 for each scoop of ice cream. What is the rate of change?

• $2.45

• $0.60

• $60

• $1.85

Bob has $150 in his savings account and saves $40 per month. What is the rate of change?

• $150

• $40 per month

• $40 per day

During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waffle cone, and $0.60 for each scoop of ice cream. What is the initial value?

• $2.45

• $0.60

• $60

• $1.85