Using inverse variation, the function model will be y = 48. 1/x and the value of y at x = -5 will be -48/5
Those with inverse properties cancel each other out. In other words, f(g(x)) = g(f(x)) = x if g(x) is f's inverse (x). We have a great approach we can use to achieve this given an equation for which we desire the inverse.
Not every action has an equivalent. It is obvious that f(x) will never again have the same value if it has an inverse. We designate a unique name for this resource.
Inverse variation is y = k. 1/x
given y = 4
x = 12
So, 4 = k. 1/12
So, the value of k = 48
We can conclude that the value of constant variation is 48
when x = -5, the value of y will be -
y = k.1/x
y = 48 . 1/-5
y = -48/5
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