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In a direct variation, y = 20 when x = 4. Write a direct variation equation that shows therelationship between x and y.Write your answer as an equation with y first, followed by an equals sign.Submit

Answer :

if y=20 when x=4, there must be a proportionality constant between the numbers.

[tex]20=k\cdot(4)[/tex]

find k

[tex]\begin{gathered} k=\frac{20}{4} \\ k=5 \end{gathered}[/tex]

rewrite the expression in terms of x and y

[tex]y=5x[/tex]

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