Answered

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Find the constant of proportionality. Then write an equation relating x and y. 3. y is directly proportional to x, and y = 35 when x = 7.

Sagot :

Given that y is directly proportional to x.

So it can be written as,

[tex]y\propto x[/tex]

or,

[tex]y=kx[/tex]

where, k is the proprtinality constant.

[tex]\begin{gathered} k=\frac{y}{x} \\ k=\frac{35}{7} \\ k=5 \end{gathered}[/tex]

Hence, constant of proportioanlity is 5.

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