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Graph the equation. Give the domain and range. Identify whether the equation is a function.
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Q293: <span class="ql-formula" data-value="x ^ { 2 }
Q325: <span class="ql-formula" data-value="x ^ { 2 }
Q395: <span class="ql-formula" data-value="\begin{array}{r}2 x+y \geq 4 \\x-1
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