What are the 3 different forms of a quadratic function and what do the variables in each represent?
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Answer:
<h2>C.</h2>Step-by-step explanation:
The equationof a circle:
<em>(h, k)</em><em> - center</em>
<em>r</em><em> - radius</em>
<em />
We have <em>center = (4, -1) → h = 4, k = -1</em>, and <em>r = 9</em>.
Substitute: