means2020 means2020

06-02-2019
Mathematics

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If y varies directly as x and y equals 20 when x=5 then what is y when x is 8

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wegnerkolmp2741o wegnerkolmp2741o

09-02-2019

Answer:

y =32

Step-by-step explanation:

If y varies directly as x

y = kx

y equals 20 when x=5

20 = k(5)

We can solve for k

Divide each side by 5

20/5 = 5k/5

4 =k

y = ? when x is 8

y = 4x

y = 4(8)

y =32

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