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makkiz [27]
3 years ago
11

Y varies jointly as x and z z. If y = 6 when x = 3 and z = 9, find y when x = 4 and z = 3.6.

Mathematics
1 answer:
masha68 [24]3 years ago
3 0

Answer:

  y = (8/5)√10

Step-by-step explanation:

You seem to have ...

  y=kx\sqrt{z}

We can find k from the given values ...

  \dfrac{y}{x\sqrt{z}}=k=\dfrac{6}{3\sqrt{9}}=\dfrac{6}{3\cdot 3}=\dfrac{2}{3}

Then for the new values, ...

  y=\dfrac{2}{3}\cdot 4\sqrt{3.6}=\dfrac{8\sqrt{90}}{3\cdot 5}=\dfrac{8\sqrt{10}}{5}

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By analyzing the graph of the transformed function, we can see that:

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<h3>How to get the function g(x)?</h3>

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First, analyzing the vertex we can see the translation used, you need to remember:

<u>Horizontal translation:</u>

For a general function f(x), a horizontal translation of N units is written as:

g(x) = f(x + N).

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<u>Vertical translation:</u>

For a general function f(x), a vertical translation of N units is written as:

g(x) = f(x) + N.

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If you want to learn more about transformations, you can read:

brainly.com/question/4289712

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