Name: ______
Color: ______
Chapter 1 Review Enriched
1. Which size bag of cat food shown in the table has the lowest unit price?
2. The graph shows the savings of Mia and Kyle.
What does the slope of each line represent?
3. Cyclists were 35 finished with their ride when they reached the 15-kilometer mark. How long was their ride?
4. A grocery store sells 6 bottles of water for $4 and 18 bottles of water for $10.
Is the cost of the water proportional to the number sold? Explain.
5. Solve the proportion: k13=0.60.5
6. When diving, a hummingbird can reach a speed of 20 miles in ½ hours. What is this speed in miles per hour?
7. Simplify:
Time Passed (hr) / Temperature (°F )2 / 75
4 / 80
6 / 85
8. Find the rate of change from the table.
9. If it takes the Ramirez family 3 days to travel 1,560 miles, how many days will it take them to travel 3,640 miles?
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10. Does the graph show a proportional relationship? Explain.
11. Janelle can get a 24-pack of bottled water for $6.80. How much would Janelle
have to pay for a 12-pack of bottled water if the ratios are proportional?
12. Find y when x = 9 if y varies directly as x, and y = 245 when x = 441.
13. Jamie and Ryan work at the grocery store. The wages earned for the weekend are shown in the table and graph. Who gets paid more per hour? Explain.
14. The table shows how much money Jordan saved the first two weeks. Graph to find the amount that Jordan saved after three weeks.
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a. What does the slope represent?
b. Is the amount saved proportional to the number of weeks?
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14. __use graph___
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14b. ______
15. Find the constant rate of change in the water level.
16. Find the slope of the line that passes through the pair of points.
A (–3, 7) , B ( 5, –1)
17. The temperature for one day is shown in the graph. Determine whether
the relationship between the temperature and the time is a direct variation.
18. State the slope and y-intercept of the graph of the equation below.
y= –8x+7
19. Write the following equations in slope-intercept form.
a. 2x+y= 8
b. -3x+y=-5
20. A balloon is rising above the ground. The height in feet y of the balloon can
be given by y = 2x + 7, where x represents the time in seconds. State the slope and y-intercept of the graph of the equation. Describe what they represent.
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18.
Slope ______
y-intercept ______
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19b. ______
20. Slope ______
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y-intercept ______
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