SAT数学Problem Solving练习题（44）
- 2017年07月27日14:08 来源：互联网
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摘要：下面是小站SAT频道为大家整理了SAT数学Problem Solving练习题(44)，供考生们参考，以下是详细内容。
以下是小站SAT频道为大家整理了SAT数学Problem Solving练习题(44)，供考生们参考，以下是详细内容。
Question 44: If x + 4y = 6 and x - 2y = 3, which of the following statements is not true?
(a) y = 1/2
(b) x = 4
(c) y = 2
(d) xy = 2
(e) x + y = 9/2
Answer: In order to find the values of x and y, we multiply the second equation by 2 and add the 2 equations:
x + 4y = 6
2x - 4y = 3
3x = 12 and x = 4, y = (6 - 3)/4 = 1/2.
y = 2 is the only equality that is false.
