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The number of calories burnes by a 90-pound cyclist is proportional to the numer of hours the cyclist rides. the equation to represent this relationship is Y=225×. What is the constant of proportionality?

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Answer

Constant of proportionality = 225

Explanation

If y varies directly as x, this can be written as

y ∝ x

Introducing the constant of variation, k, we have

y ∝ x

y = kx

So, for this question,

y = 225x

Constant of proportionality = 225

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