MUE Ch 3 Functions Part 1

Manny paid $24 for 4 books at the book fair. Each book was the same price. Graph this situation including points for x = 1 and

x = 2 with a line through the points.

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8.5.A

The equation ​ (a)   represents the situation, and the 7​ (b)   corresponds to 2 ​ (c)   .

• cups
• bags

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8.5.A

If the movie ticket price is constant, the equation for any cost is ​ (a)   because ​ (b)   depends on ​ (c)   .

• c = 7.5p
• cost
• people

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8.5.I

Melissa saves some allowance each week and plots her total amount saved on a graph. What equation compares total amount saved and number of weeks?

s = ___w

Mathematical Equivalence

ON

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8.5.I

Nora must drive 250 miles to get home. She drives straight home at a constant speed of 55 miles per hour. The equation d = ​ ​ (a)   ​ (b)   ​ (c)   shows Nora's distance from home at any given time.

• 55
• 250
• 55t
• -
• +
• 250t

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8.5.B

Choose the point that also belongs on the coordinate grid above and plot it.

Choices: (1, 4), (3, 4.5), (1, 5.5), (4, 3). Plot only one of these points and (0, 5).

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8.5.B

The amount a book club charges its members can be modeled by the equation y = 12x, where y is the total amount charged to the member and x is the number of books purchased. Which of the following statements is true?

• The relationship is non-proportional and the rate is $12 per book.

• The relationship is non-proportional and the rate is $1 per book.

• The relationship is proportional and the rate is $12 per book.

• The relationship is proportional and the rate is $1 per book.

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8.5.F

8.5.H

The relationship between the length of the puppy's tail and its age is ​ (a)   . The puppy's tail at birth was ​ (b)   long.

• non-proportional
• proportional
• 0.5 in.
• 0 in

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8.5.F

8.5.H

The graph ​ (a)   represent a linear relationship because the graph ​ (b)  

• does
• does not
• has a constant rate of change
• has a negative slope
• does not pass through the origin

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8.5.C

Does the data set shown in the graph represent a linear relationship?

• No, because the graph does not have a constant rate of change.

• No, because the graph does not have a y-intercept.

• Yes, because the graph passes through the origin.

• Yes, because the graph has an x-intercept.

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8.5.C