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•Inverse Variation
5-8: Solve. Assume y varies inversely as x.

5. y = 9 when x= 6. Find y when x= 2.

6. y = 4 when x = 6. Find y when x = 12.

7-8: SOLVE

7. It takes 4 hours for 9 cooks to prepare a school lunch. How long would it take 8 cooks to prepare the
lunch? (This is an inverse variation. t = time, c = cooks)

8. The current (1) in an electrical conductor varies inversely as the resistance (r) of the conductor. The
current is 2 amperes when the resistance is 960 ohms. What is the current when the resistance is 480 ohms?​

Sagot :

LheLhenggo

Answer:

5. Y= k/x

9=k/6

k=9(6)

k= 54

Y=54/2

Y=27

6. Y= k/x

4=k/6

k=4(6)

k=24

Y=24/12

Y=2

7. T=k/c

4=k/9

k=36

T=36/8

T=4.5

8. C=K/R

2=k/960

k=1920

C=1920/480

C=4

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