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Friday, September 13, 2013
Objective #3: Identifying Proportional and Non­proportional
Relationships in Tables
HW: Lesson 3 Problem Set
Do Now:
Check your homework answers from last night.

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Yesterday's Exit Ticket

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8
16
24
32
36
40
48
52

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If the hours change, does that mean the pay
MUST change?

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How did you determine the pay for hours?

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If the quantities in the table were graphed, would
the point (0,0) be on the graph?
x y, Babysitting Pay
Hours Worked
Pay
0 1 2 3 4 5 6 7
2
4
6
8
10
12
14
16
18
20

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Describe the relationship between the amount
of money earned and the number of hours
worked in this example.

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Describe the relationship between the amount
of money earned and the number of hours
worked in this example.
The two quantities are in a proportional
relationship since time can be multiplied by the
same number to get the amount of pay.

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How can multiplication and division be used to
show the earnings are proportional to the number
of hours worked?

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How can multiplication and division be used to
show the earnings are proportional to the number
of hours worked?
Every measure of time (hours) can be multiplied
by the constant 8 to get each measure of pay.
Each measure of y (pay) can be divided by 8 to get
the corresponding x (hours).

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Yes, pay is proportional to hours because when hours are multiplied by 8, it
gives the corresponding pay amount.

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Get into pairs and complete Examples 1 ­ 4

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Exit Ticket
To be handed in

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