The value of y is inversely proportional to the value of x. When y=42, x=6.
What is the value of y when x = 9?

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(1) Answers

Coltman208

Because [latex]x[/latex] and [latex]y[/latex] are inversely proportional, there is some constant [latex]k[/latex] such that
[latex]xy=k[/latex]
Given that [latex]y=42[/latex] and [latex]x=6[/latex], we have
[latex]k=6\times42=252[/latex]
So when [latex]x=9[/latex], you have
[latex]9y=252\implies y=\dfrac{252}9=28[/latex]