2. Suppose that y varies inversely with x. Write an equation for the inverse variation.
y = 4 when x = 7
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Respuesta :

Answer:

[tex]y=\frac{28}{x}[/tex]

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form [tex]y*x=k[/tex] or [tex]y=k/x[/tex]

we have

y = 4 when x = 7

Find the value of the constant of proportionality k

[tex]k=y*x[/tex]

substitute

[tex]k=(4)(7)=28[/tex]

therefore

The equation  for the inverse variation is equal to

[tex]y=\frac{28}{x}[/tex]