下面是一道关于抛物线的SAT数学题及其解法的内容，非常详细。SAT题中，抛物线是必考的一类，虽然中学课程都有所涉及，还是相对比较抽象，尤其是在理解SAT数学题的表达方式上。下面我们来看看这道关于抛物线的SAT数学题吧。
Read the following SAT test question and then click on a button to select your answer.
The quadratic function
is 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 that
for all values of
means that the point
is the maximum of the quadratic function
, so
must be the vertex of the parabola. The parabola intersects the
-axis at the points
and
, so
must be halfway between
and
. Therefore,
. Of the choices, the only one with
-coordinate equal to
is
. 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。
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