Asked by Anonymous

For a quadratic with a vertex of (4, 1) with the graph opening downward, is this the right construction in vertex form?

-a(x - 4) + 1
Answered by Steve
It's good. You don't really need the leading "-" if you say a is negative, but having it there does signal your intentions clearly.
Answered by Anonymous
Actually, the assignment says the graphs opens downward and asks me to put in in the equation. So then this looks fine, right?
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