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C血a斬er 4 Review Ays亘g皿ment (4-2 & 4-3)

1きMONEY Diana eams $8.50 an hour working as a lifeguard.

Make a table to find Diana’s eamings ifshe works 4, 5, 6,

or 7 hours.

2。 Write an equation/細nction to find Diana’s money eamed m for any

runber of hours h.

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3. Identify血e Independent Variable and血e Dependent Variable in Problem #1. Use descriptions宜om the

PrOblem statement・

3a. Independent‥

3b. Dependent:

4. Graph the ordered pairs宜om Exercise l. Label血e x- andy-aXeS.

5. Findj(2)if /む) =　2x十1.

6. Findj(-4)if頂*) = -1JC-5.

7. What is也e domain of血e relation ((-2,4),(1,3),(0,-4),(3,2)〉?

8. Is血e E塾g9 the Independeut or Dependent Variable?

9. Complete the function table in也e answer colunn at血e

right ifjtK) = X + 4.

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NAME DATE PERIOD

Chapter 4 Review Assignmen七(4」5 & 4-9)

-子1. Jane and Marcus are rummg m a marathon. Jane rms at an average speed of6 miles per ho皿

The graph shows血e average speed Marcus rms. Compare血e functions’rates of change.

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Jane ’s Equation:

Marcus ’Equation:

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A. Jane and Marcus have也e same average speed・

B. Jane’s average speed is double Marcus’s average speed・

C. Marcus’s average speed is 2 miles per hour greater瓜an Jane’s average speed・

D. Marcus’s average speed is 2 miles per hour less thm Jane’s average speed.

2. The amount of snowfall each hour in New York and

Cincimati are shown’below. W址ch city will have

more snowfa11 a宜er 8 hours? Justify your response.

New York Eqn:

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Cinci皿ati Eqn:

A. After 8 hours, New York wi11 have 45 inches of snow and Cinci皿ati will have 24 inches of snow.

So, New York wi11 have more snow affer 8 hours thm Cinci皿ati.

B. After 8 hours, New Yok will have 40 inches of snow and Cincimati will have 29 inches of snow.

So, New York will have more snow after 8 hours也an Cinci皿ati.

C. After 8 hours, New York will have 40 inches of snow and Cincimati will have 24 inches of snow.

So, New York will have more snow a蹄er 8 hours than Cinci皿ati.

D. After 8 hours, New York will have 29 inches of snow and Cincimati will have 40 inches ofsnow.

So, New York will have less snow after 8 hours也an Cincimati.

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←一- 、 3. The function s = 7m十25 reprqus apromotional Pla皿Aリwhere s is血e nmber ofpo血s eamed for m

do11ars spent, W血a bonus 25 points eamed for stating the plan. Promotional PIa皿B is shown in the

table. Assune that也e relationship between血e two quantities is linear.

Plan A Equation:

Plan A Rate:

Plan A y-intercept:

Plan B Equation:

Plan B Rate:

Plan B y-intercept:

CompaFe the紐nctions弓,-intercept§・

A. The y-intercept for Plan A is血e same as血e y-intercept for Plan B.

B. The y-intercept for Plan A is halfthe y-intercapt for Plan B.

C. The y-intercept for Plan A is 25 greater than血e y-i血ercept for Plan B.

D. The y-intercept for Plan A is 7 greater than血e y-intercept for Plan B.

4. A biker is participating in a fundraiser bike ride・ Draw a Qualitative graph to display血e following

situation:

The biker begins biking along血e route at a constant rate.皿en血e biker stops at a rest station for a short

time. Then血e distance traveled increases steadily again. The biker stops at ano血er rest station. Then血e

biker continues on the route one more time at a constant rate. Finally, the biker stops for the day

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orote: Label bo也Axes appropriately.)

NAME DA丁E PERIOD

一5.認諾豊霊graPh displays血e height ofthe football’Describe the

A. The height o弛e football increases at a consta血rate until it reaches a maximun. Then the heig址of

the football decreases at a constaut rate.

B. The height ofthe footba11 increases at a varied rate until it reaches a max血um. Then血e heig址of瓜e

footba11 decreases at a varied rate.

c. The height of血e football decreases at a varied rate u皿it reaches a max血um. Then the height of血e

footba11 increases at a varied rate.

D. The heig址ofthe football increases at a varied rate uutil it reaches a maxim皿. Then血e heig址o抽e

football decreases at a constaht rate.

NAME PERIOD

二・-・ 6.皿e graph below displays Tammy’s apeed whn she goesjogging. Describe血e change in TamHry’s

SPeed over time.

A. Tammy,s speed increases at a steady rate. Then it increases at a sIower, S皿steady, rate until she

reaches her maximun speed・ Fina11y, Ta皿皿y’s speed re皿ains constant.

B. Tammy,s speed decreases at a steady rate as she goes up a劃1・ Then her speed increases at a steady

rate uI正1 she reaches her maximm SPeed・ Finally, Tammy,s speed re皿ains constant.

C. Ta皿my,s speed increases at a steady rate. Then the rate ofincrease sIows doⅥ1 a bit・ Then Tam耳y’s

speed decreases slightly as she goes岬a皿・ Fina11y, Tam|ny’s speed remains consta血

D. Tammy’s speed increases at a steady rate un創she reaches her maximum speed・ Then it decreases at a

steady rate as she goes up a皿1. Finally, her speed increases at a sIower・.Steady rate.

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