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Y is inversely proportional to x.
When y = 7, x= 9
Work out the value of y when x = 21.

User Electra
by
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1 Answer

2 votes

Answer:

y = 3

Explanation:

y is inversely proportional to x setup: y = k/x

'k' is the constant of variation; find this first

7 = k/9

k = 63

now use 'k' to find 'y'

y = 63/21

y = 3

User Michael McKenna
by
7.6k points

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