Find an equation of variation in which y varies directly as x and y=28 when x=7. Then find the value of y when x=16.

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03-11-2022
Mathematics

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Find an equation of variation in which y varies directly as x and y=28 when x=7. Then find the value of y when x=16.

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LennynV668980 LennynV668980 · Answer 1 · 2022-11-03T10:05:10+01:00

LennynV668980 LennynV668980

03-11-2022

[tex]\begin{gathered} y=Kx \\ \text{when x=7, y=28} \\ 28=K(7) \\ K=\frac{28}{7} \\ K=4 \\ y=4x \\ \text{when x=16} \\ y=4\cdot(16) \\ y=64 \\ When\text{ x is 16 the value of y is 64} \end{gathered}[/tex]

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