Relate the domain of a quadratic function to its graph and situation.
Determine the domain shown by a quadratic graph description
Problem
What domain is shown by this quadratic graph description: the parabola segment starts at a closed point at \(x=0\) and ends at a closed point at \(x=6\).
The domain of a displayed graph is its horizontal coverage, even when the underlying formula could continue farther. We’ll locate the leftmost and rightmost plotted inputs, check for gaps or continuation arrows, and translate each endpoint’s open or closed marker into interval notation.
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