This is an equation that starts in standard form. To graph it we must complete the square to put it into parent function form. The graph would not be a sketch but an accurate representation of the formula.
You must pay attention to how you complete the square because you can't just plug in any number. You must also pay attention when you are solving for the x-intercepts. You must know that when 'a' is negative the graph opens down but when it is positive it will open up.
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