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Brilliant_brown [7]
1 year ago
8

Use the given information to find the unknown value:y varies inversely with a. When x = 4, then y= 4. Find y when I = 2.Iyy =hel

p (numbers)

Mathematics
1 answer:
Mashutka [201]1 year ago
3 0

Inverse variation:

y=\frac{k}{x}

k is a constant

Use the given information (when x=4 y=4) to find the value of the constant:

\begin{gathered} 4=\frac{k}{4} \\  \\ \text{Multiply both sides of the equation by 4:} \\ 4\times4=4\times\frac{k}{4} \\  \\ 16=k \\  \\  \\ k=16 \end{gathered}

Then, the given relationship has the next equation:

y=\frac{16}{x}

Use the equation above to find y when x=2:

\begin{gathered} y=\frac{16}{2} \\  \\ y=8 \end{gathered}Then, when x=2, y=8
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