列表:x 1 2
y 3 6
x 3 6
y -1 -2
描点,连线······你会的
用图像法解下列二元一次方程组(1)3x-y=0 x+3y=0,(2)x+y=0 2x-y+6=0
用图像法解下列二元一次方程组(1)3x-y=0 x+3y=0,(2)x+y=0 2x-y+6=0
数学人气:392 ℃时间:2019-08-21 10:21:35
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