TEKS.MATH.7.4C

What is the constant of proportionality?

• $3
• $4
• $2
• $9

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TEKS.MATH.7.4C

Review. 
Write the equation (y=kx) that represents the following situation.
Jessica can type 135 words in 9 minutes.

• y = 135x
• y = 9x
• y = 15x
• y = 10x

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TEKS.MATH.7.4C

Which table shows a proportional relationship?

• A
• B
• C
• D

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TEKS.MATH.7.4C

What is the equation y=kx for the table?

• y=1/3x
• y=3x
• y=5x
• y=1/5x

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TEKS.MATH.7.4C

A store sees 120 customers in 8 hours. What is the constant of proportionality?

• 16 customers per hour
• 15 customers per hour
• 12 customers per hour
• 20 customers per hour

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TEKS.MATH.7.4C

Does the table represent a proportional relationship?

• yes
• no

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TEKS.MATH.7.4C

Determine if the table above is proportional and how do you know?

• The table is proportional because the unit rate is a constant 0.33.
• The table is proportional because it passes through the origin.
• The table is proportional because the unit rate is a constant 0.28
• The table is not proportional because the unit rate is not constant.

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TEKS.MATH.7.4C

What is the constant of proportionality of money per hour?

• $3

• $4

• $2

• $9

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TEKS.MATH.7.4C

If the table is constant, using k, find the total amount earned if you worked for 15 hours.

• $232.50

• $30.50

• $0.50

• $225

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TEKS.MATH.7.4C

The table represents the price of McDonald's Value Meals. What is the constant of proportionality?

• 5.25

• 10.50

• 5

• 2

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TEKS.MATH.7.4C