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Is #y =4.2/x# a direct variation equation and if so, what is the constant of variation?

Answer 1

Julia Adams

#"inverse variation"#

#"the standard form of a direct variation equation is"#

#•color(white)(x)y=kxlarrcolor(blue)"k is the constant of variation"#

#"the standard form of an inverse variation equation is"#

#•color(white)(x)y=k/xlarrcolor(blue)"k is the constant of variation"#

#rArry=4.2/x" represents inverse variation"#

#"with "k=4.2#

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Answer 2

Eva Abramson

Yes, the equation ( y = \frac{4.2}{x} ) is a direct variation equation. The constant of variation, often denoted as k, is equal to 4.2.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.