2元１次方程式 ax+by=c のグラフで，a=0やb=0の場合のグラフをかいてみよう。

1) Move the sliders till you see Solution: ?:[br] a) What do you notice about the equations?[br] b) What do you notice about the graphs of the lines?[br][br]2) Move the slider till you see Solution: Infinately many.[br] a) What do you notice about the equations?[br] b) What do you notice about the graphs of the lines?

２元１次方程式x+2y=2のグラフをかいてみよう。