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SAT数学:图像例题 4

2019-09-12 SAT-数学 阅读

SAT Question 
Rank: Easy
Topic: Algebra, Interpretting Quadratics

Below is a question from a recent SAT exam. It is a non-calculator question that would typically take a student 1-2 minutes to complete.

The graph of is shown in the xy-plane. What is the value of f (0)?
(A) 0
(B) 2
(C) 3
(D) 4

To answer this question, we need to realise that we are looking for the value of y when x=0. We can see this from the question as we are told that .

So, by drawing a line straight up from the origin to the curve, we can see that when x=0, y=4. Therefore,


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