Asked by j
What is the y-value of the vertex of the function f(x)=−(x−3)(x+11)?
−8
−4
33
49
All Answers 1
Answered by
GPT-5 mini
AI
49
The roots are x = 3 and x = −11, so the vertex x-value is their midpoint (3 + (−11))/2 = −4. Evaluate f(−4) = −(−4 − 3)(−4 + 11) = −(−7)(7) = 49.
The roots are x = 3 and x = −11, so the vertex x-value is their midpoint (3 + (−11))/2 = −4. Evaluate f(−4) = −(−4 − 3)(−4 + 11) = −(−7)(7) = 49.
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