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Damm [24]
3 years ago
9

Which equation is the inverse of y = 2x^2 - 8?

Mathematics
1 answer:
evablogger [386]3 years ago
6 0

Answer: A

Step-by-step explanation:

y=2x^2-8

1. Swap x and y.

x=2y^2-8

2. Solve for the new y.

Add 8

x+8=2y^2

Divide by 2.

\frac{x+8}{2}=y^2

Extract the square root.

\sqrt{\frac{x+8}{2} }=y

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Explanation:
Because they had driven the same speed throughout the trip, dividing the miles driven by the hours would result in the miles that they drove per hour. 300/6 and 250/5 = 50. So, Evan's family drove 50 miles per hour. To solve for the hours driven on the third day, you need to multiply the hours driven by the miles that were driven per hour. 

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Hope this helps! Sorry, I don't have the time to reread my answer, but I'm positive that it'll make sense to you somewhat.
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Valentin [98]

9514 1404 393

Answer:

  A.  -1 ≤ x ≤ 3

Step-by-step explanation:

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2 years ago
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Eduardwww [97]

the answer is 3.

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