functions exercise set 2 - weebly
TRANSCRIPT
FunctionsExerciseSet2
1. Function𝑓givesthetemperature,indegreesCelsius,𝑡hoursaftermidnight.
Choosetheequationthatrepresentsthestatement:“At1:30p.m.,thetemperaturewas20degreesCelsius.”
a. 𝑓(1: 30) = 20
b. 𝑓(1.5) = 20
c. 𝑓(13: 30) = 20
d. 𝑓(13.5) = 20
2. Deanfilleduphisbathtub,tookabath,andthendrainedthetub.Thefunction𝐵givesthedepthofthewater,ininches,𝑡minutesafterTylerbegantofillthebathtub.
Explainthemeaningofeachstatementinthissituation.
a. 𝐵(0) = 0
b. 𝐵(1) < 𝐵(7)
c. 𝐵(9) = 11
d. 𝐵(10) = 𝐵(22)
e. 𝐵(20) > 𝐵(40)
3. Function𝑓givesthetemperature,indegreesCelsius,𝑡hoursaftermidnight.
Usefunctionnotationtowriteanequationorexpressionforeachstatement.
a. Thetemperatureat12p.m.
b. Thetemperaturewasthesameat9a.m.andat4p.m.
c. Itwaswarmerat9a.m.thanat6a.m.
d. Sometimeaftermidnight,thetemperaturewas24degreesCelsius.
4. Circleallpointsthatareonthegraphof𝑓ifweknowthat𝑓(2) = -4and𝑓(5) = 3.4.
a. (-4,2)
b. (2,-4)
c. (3.4,5)
d. (5,3.4)
e. (2,5)
5. Writethreestatementsthataretrueaboutthissituation.Usefunctionnotation.
Function𝑓givesthedistanceofadogfromapost,infeet,asafunctionoftime,𝑡,inseconds,sinceitsownerleft.
Usethe=signinatleastonestatementandthe<signinanotherstatement.
1.
2.
3.