3 years ago

What is y=0.5 (x-6)^2+15 solved for x?

1 answer:

7 0

$y=0.5(x-6)^2+15\\
0.5(x-6)^2=y-15\\
(x-6)^2=2y-30\\
x-6=-\sqrt{2y-30} \vee x-6=\sqrt{2y-30}\\
x=6-\sqrt{2y-30} \vee x=6+\sqrt{2y-30}
$

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