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 y = f (x) is shown in the xy-plane. What is the value of f (0)?
y = f (x)在xy平面上表示。f(0)的值是多少?
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 y=f(x).
So by drawing a line straight up from the origin to the curve we can see that when x=0, y=4. Therefore, f(0)=4
通过从原点到曲线的直线可以看出，当x=0 时，y=4。因此, f (0)= 4
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