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3 years ago

Please help, I can't remember any of this.

Mathematics

1 answer:

Neporo4naja [7]3 years ago

7 0

The correct answer is the third one.

However, i would suggest you to remember the following simple rule:
$a^{2}=b \newline
a=\pm\sqrt{b}.$

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Step-by-step explanation:

To get the inverse, swap the x- and y-variables, then solve for y. We should have the equation: $x = 2y^2 - 8$

Solving for y:

$y = 2x^{2} - 8$ because $y + 8 = 2x^{2}$ or $x =\sqrt\frac{y + 8}{2}$

So on interchanging the variable, we get the equation:

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3 years ago

I will give brainliest + 50pts

nata0808 [166]

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Step-by-step explanation:

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