聯立方程 (圖解法) | Simultaneous Equations in Two Unknowns (Graphical Method)

影片內容：

00:26 – 咩係聯立方程? | what are simultaneous equations?
01:05 – 圖解法概念 | ideas of graphical method
02:39 – 例子 | example
04:44 – 圖解法的局限 | limitations of the graphical method