Problem 78 of 7
Interpret the parameters in vertex-form quadratic f(x)=-x^2-7.
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read vertex, stretch, and opening direction.
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Function must be in a(x-h)^2+k form.
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Solution
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1. Read h and k from a(x-h)^2+k.
2. Use the sign of a for opening direction.
3. Use the magnitude of a for vertical stretch or compression.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Sign errors for the horizontal shift.