初中数学七年级下册（573题）

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下列各组数值中，哪个是二元一次方程组\(\begin{cases} x + 2y = 6 \\  x - y = 3 \ \end{cases}\)的解（）

A.\(\left\{ {\begin{array}{*{20}{l}} {x = 1} \\ {y = 2} \end{array}} \right.\)

B.\(\left\{ {\begin{array}{*{20}{l}} {x = - 1} \\ {y = 3} \end{array}} \right.\)

C.\(\left\{ {\begin{array}{*{20}{l}} {x = 4} \\ {y = 1} \end{array}} \right.\)

D.\(\left\{ {\begin{array}{*{20}{l}} {x = - 2\;} \\ {y = 2} \end{array}} \right.\)

知识点：第八章　二元一次方程组

参考答案：C