Linear equations in two variables · 第 16 题

Linear equations in two variables · 原库模块 1 · Q16 原库参考解析

5x +7y =1
ax + by =1
In the given pair of equations, a and b are constants. The graph of this pair of equations in the xy-plane is a pair of perpendicular lines. Which of the following pairs of equations also represents a pair of perpendicular lines?

Linear equations in two variables · 第 16 题

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