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kati45 [8]
3 years ago
7

If y varies inversely with x, and y is 8 when x is 5, find y when x is 2.

Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

y is equal to 5 when x is 2

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I dont understand
crimeas [40]
To determine the inverse of a function, we first write the parent function in terms of y. So, in this part the x would be isolated to one side of the equation. Then, with the new form of the parent function, we switch the x into y and y to x. The new function would be the inverse function. For the given function, we do as follows:

<span> y=-4/x + 1 
y - 1 = -4/x
x ( y - 1 ) = -4
x = -4 / (y -1)

Replacing x into y and y into x,

</span>y = -4 / (x -1)

<span>Therefore, the inverse is y=-a/x-b where a = 4 and b = 1.</span>
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