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)?
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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