SAT数学Problem Solving练习题(11)
- 2017年07月25日13:57 来源:互联网
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Question 11: Given the table below, which of the following answers describes the relation between x and y?
xy
01
25
417
526
(a) y = x + 5
(b) y = x2 + 1
(c) y = 2 · x + 1
(d) y = 3 · x - 1
(e) y = 4 · x + 1
Answer: From the pair x = 0 and y = 1, we realize that only answers (b), (c) and (e) could be correct answers.
Examining the 3 choices, we find that the correct answer is (b)