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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.
y � � � � � � � �圭
「 � � � � � � � � �!
i � � �! � � � � � �
i i
「 ��i �� � � � �
i
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う � �i �i �� � � �;x
-3 �� �
ー王 �� �
2 �� �
= �� �
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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