【官方】SAT数学每日一题附答案和解析(2018年3月9日)
- 2018年03月10日10:30 来源:小站整理
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每日一练:数学
Mathematics>Standard Multiple Choice
Read the following SAT test question and thenclick on a button to select your answer.
y^2-y=3(1-x)
y=2x
If (x1,y1) and (x2,y2) are two distinct solutions to the system of equations shown above, whatis the sum of x1 and x2?
A.-1/4
B.1/4
C.1
D.-1
答案:A
解析:
Choice A is correct.
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