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alexandr402 [8]
3 years ago
9

What is the inverse function of y=x^2-7

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0
With inverse functions you just swap 'x' and 'y' and solve for 'y'.

\sf y=x^2-7

Swap 'x' and 'y':

\sf x=y^2-7

Add 7 to both sides:

\sf x+7=y^2

Take the square root of both sides:

\sf y=\boxed{\sf\pm\sqrt{x+7}}
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