
Lineær model Karameller og strudseunge
Authored by astrid helin
Mathematics
12th Grade
Used 2+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En strudseunge vejer 2 kg ved udklækningen og tager 0,2 kg på hver dag.
x: antal dage efter udklækningen
f(x): strudseungens vægt efter x dage. Find en forskrift for sammenhængen mellem antal dage og strudsens vægt.
f(x)=2x + 0,2
f(x)=0,2x + 2
fx)=0,2 + 10
f(x)=2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For den samme strudseunge skal du beregne dens vægt efter 10 dage. Hvad gør du ?
Sætter f(x) = 10
Sætter x = 10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Strudseungen med forskriften f(x) = 0,2x + 2 slagtes, når den vejer 50 kg. Hvordan finder du antallet af dage til slagtning ?
x: antal dage efter udklækningen
f(x) : vægt i kg efter x dage
sætter x = 50
sætter f(x) = 50
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antallet af karameller i en dåse er givet ved f(x)=50 - 2x
x: antal dage efter åbningen
f(x): antal karameller efter x dage. Hvad fortæller a = -2 karameller /dag ?
at der tilføjes 2 karameller i dåsen hver dag
at der spises to karameller hver dag
at der er 50 karameller ved åbningen af dåsen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvornår er dåsen tom ?
x: antal dage efter åbningen
f(x): antal karameller i dåsen
Når x = 0
Når f(x)= 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvordan løser man ligningen 0 = 50 - 2x i nspire ?
man skriver løs(0= 50 - 2x, x)
man skriver solve( 0 = 50 - 2x, x )
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