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Dmitry [639]
3 years ago
5

16. If y varies directly as x, and x = 9 when y = 15, find y when x = 33?​

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

y=55 when x is 33

Step-by-step explanation:

Use the direct variation formula:

\frac{y}{x} =k  or \frac{y}{x} =\frac{y}{x}

Insert the given values:

\frac{15}{9}=\frac{y}{33}

To simplify the equation, cross multiply:

15(33)=9(y)\\\\495=9y

Isolate the variable. Divide both sides by 9:

\frac{495}{9} =\frac{9y}{9} \\\\55=y

Therefore, when x is 33, y is 55.

:Done

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