Bluebook试题9 · 第 22 题

Bluebook试题9 · 原库模块 3 · Q22 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?

Bluebook试题9 · 第 22 题

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