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WorksheetsChapter 9 Review (pages 195-197)
Total questions: 15
Worksheet time: 14mins
In a relation, the __________ is the variable with a value that depends on the value of the other variable.
Independent Variable
Dependent Variable
In a relation, the __________ is the variable with a value that is subject to choice.
Independent Variable
Dependent Variable
Changes in the __________ affect the value of the other variable.
Independent Variable
Dependent Variable
A store charges $1.70 for a bottle of fruit juice
Write an equation to represent the relationship between the total cost and the number of bottles of fruit juice purchased.
(a)
What is the total cost of 8 bottles of fruit juice?
(a)
Reginald saves $10 each week. He writes an equation representing the total amount of money he has saved and the number of weeks he has been saving. What is the independent variable? the dependent variable?
Number of weeks
Money Saved
The table shows the total cost, c, of buying b shell bracelets at a souvenir shop. Write an equation to represent the relationship between the variables.
(a)
The equation c = 15.25h represents the cost, c, for h hours of a bicycle rental. If a customer's bill is $61, for how many hours did they rent the bicycle?
(a)
A remote control car is traveling at a speed of 1 meter per second. What is the dependent variable in this situation? Explain your answer.
Seconds are independent because time is something I can choose.
Seconds are dependent because they depend on how many meters fast the car
Meters are independent because that is something I can choose.
Meters are dependent because they depend on how many seconds I choose to drive the car.
A plumber charges an hourly fee for a service call. The table shows the relationship between the total cost c and the number of hours a job takes h. Which equation represents the situation?
c = h + 40
c = 40h
h = c + 40
h = 40c
The graph shows the amount of money m, in dollars, Ayasha earned for h hours of work. Write an equation that could be used to find the amount of money Ayasha earns for any number of hours of work.
(a)
James is selling magazine subscriptions. He earns $10 for every subscriptions sold.
Look at your graph on page 197 in your math book. Which answer choice has ordered pairs that would be found on your graph.
(0,0), (10, 1), (20, 2),
(30, 3)
(0,0), (1, 10), (2, 20),
(3, 30)
(0, 0), (1, 20), (2, 40),
(3, 60)
(0, 10), (1, 20), (2, 30),
(3, 40)
Which of the following equations can be used to find James' total earning t for selling s subscriptions?
t = 10s
t = 10 + s
s = 10t
s = 10 + t
James earned $150. How many subscriptions did he sell?
13
14
15
16
