Suppose that y varies inversely with x. Given x=-3 when y=-105. Find y when x=15

21

Step-by-step explanation:

It is given that y varies inversely with x.

      ...(i)

where, k is constant of proportionality.

It is given that x=-3 when y=-105. Substitute these values in equation (i), to find the value of k.

Now,

Substitute x=15 in the above equation.

Therefore, the value of y is 21 when x=15.

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