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一道关于抛物线的SAT数学题.

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  下面澳际小编为各位同学搜集整理了一道关于抛物线的SAT数学题,非常详细,希望对大家的SAT数学考试备考有所帮助。

Read the following SAT test question and then click on a button to select your answer.

  

  The quadratic functionis graphed in the-plane above. If for all values of, which of the following could be the coordinates of point?

  Answer Choices

  (A)

  (B)

  (C)

  (D)

  (E)

  The correct answer is C

  Explanation

  The fact thatfor all values ofmeans that the pointis the maximum of the quadratic function, somust be the vertex of the parabola. The parabola intersects the-axis at the pointsand, somust be halfway betweenand. Therore,. Of the choices, the only one with-coordinate equal tois. Therore,could be the coordinates of point.

  以上便是一道关于抛物线的SAT数学题介绍,希望对大家的SAT数学考试备考有一定的参考作用,帮助大家更好地备考。澳际小编祝大家都能取得理想的SAT数学考试成绩!想要了解更多关于“SAT数学考试”的信息,请拨打免费留学培训热线:400-601-0022,或者直接点击网页上的“在线咨询”,与我们的澳际培训专家一对一沟通交流!

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