Bluebook试题10 · 第 21 题

Bluebook试题10 · 原库模块 3 · Q21 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?

Bluebook试题10 · 第 21 题

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