Precalculus Examples

$y = x^{2} - 18 x + c$

Step 1

Rewrite the equation as $x^{2} - 18 x + c = y$ .

$x^{2} - 18 x + c = y$

Step 2

Move all terms not containing $c$ to the right side of the equation.

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Step 2.1

Subtract $x^{2}$ from both sides of the equation.

$- 18 x + c = y - x^{2}$

Step 2.2

Add $18 x$ to both sides of the equation.

$c = y - x^{2} + 18 x$