SAT数学-简单观察 Example 08

发布于 2015-09-01  123 次阅读

Question 1
The function f has the property that f(a)=f(b) for all numbers a and b. What is the graph of y=f(x) in xy-plane ?
A
A line with slope 0
B
A line with slope 1
C
A circle with center (0, 0)
D
A semicircle with center (0, 0)
E
A parabola symmetric about the y-axis
Question 1 Explanation: 
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