The College Board ? of the Day

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

The quadratic function ƒ is graphed in the xy-plane above. If ƒ(x) u for all values of x, which of the following could be the coordinates of point P?

1. (2, 3.5)


2. (2.25, 3.25)


3. (2.5, 3)


4. (2.75, 4)


5. (3, 2.5)

Hint
The point P(t, u) is the maximum of the quadratic function ƒ, so P(t, u) must be the vertex of the parabola.