ONE QUESTION, ONE STEP
ZX-F93B028AA6Systems of two linear equations in two variables · 第 18 题
Systems of two linear equations in two variables · 原库模块 1 · Q18 原库参考解析
2x +3y =7
10x +15y =35
For each real number r , which of the following points lies on the graph of each equation in the xy-plane for the given
system?
参考答案：
解题思路
容易忽略的一步
