Which equation is the inverse of y = 9x^2 - 4?

1 answer:

3 0

Keep in mind that, to get the inverse expression of any relation, we start off by doing a quick switcharoo on the variables, and then solve for "y", so let's do so,

$\bf y=9x^2-4\qquad \stackrel{inverse}{\boxed{x}=9\boxed{y}^2-4}\implies x+4=9y^2
\\\\\\
\cfrac{x+4}{9}=y^2\implies \sqrt{\cfrac{x+4}{9}}=\stackrel{f^{-1}(x)}{y}$

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<u>Step-by-step explanation:</u>

In 2019, a house appraised at a value of 87,400. the property tax was $ 10,100. After some remodeling and improvements, the house appraised for $124,000 in 2020. The property tax rate is the same as it was in 2019.

Initially, price of house is $87,400 and tax is $10,100. Let's find tax rate:

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