Question

If x varies directly as y find y
a) x=10
y=6
x=35
b) x=22
y=12
x=11
c) x=9 (find x)
y=15
y=45 ​

Answer 1

⇝If x varies directly as y, find y

• $x = 10 \\ y = 6 \\ x = 35$

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10/6=35/y

10y=35×6/10

y=35×6/10

y=210/10

y=21

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⇝If x varies directly as y, find y

• x= 22
• y=12
• x=11

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22/12=11/y

22y=12×11

y=132/22

y=6

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⇝If x varies directly as y, find x

• x=9
• y=15
• y=45

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9/15=x/45

15x=45×9

x=45×9/15

x=405/15

x=27

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