下面是一道关于抛物线的
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. Therefore,. Of the choices, the only one with-coordinate equal tois. Therefore,could be the coordinates of point.
以上就是这道SAT数学题的全部内容，后面附有详细的解析。大家在备考SAT数学题相关内容的时候，可以按照这道SAT数学题的解题思路进行思考，这样就可以更加贴近SAT考试的出题方式，更容易获得高分成绩了。