ONE QUESTION, ONE STEP
ZX-F487455A982024年10月B卷 · 第 15 题
2024年10月B卷 · 原库模块 1 · Q15 原库参考解析
The function \( f\left(x\right)=\frac{1}{9}\left(x-4\right)^2+5 \) gives a toy car's height above the ground \( f\left(x\right) \), in inches, x seconds after it started moving on an elevated track, where \( 0\le x\le10 \). Which of the following is the best interpretation of the vertex of the graph of \( y=f\left(x\right) \) in the xy-plane?
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