The variables x and y vary directly. if one pair of the values is x = 3 and y = 12, write an equation that shows the relationship between x and y.

Question

Mathematics

Vincent Krause

8 March, 04:10

The variables x and y vary directly. if one pair of the values is x = 3 and y = 12, write an equation that shows the relationship between x and y.

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Answers (2)

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Richard Franco · Answer 1

If they vary directly then they increase at the same amount

This can be written out with the equation

y/x=k k being the constant of the variation

In this case 12/3=4 the constant is 4

So you can say y=4x

Rohan · Answer 2

The variables x and y vary directly. if one pair of the values is x = 3 and y = 12, write an equation that shows the relationship between x and y.