The matrix
\[\begin{pmatrix} a & b \\ -\frac{4}{5} & \frac{3}{5} \end{pmatrix}\]corresponds to a reflection.  Enter the ordered pair $(a,b).$
Question:
The matrix
\[\begin{pmatrix} a & b \\ -\frac{4}{5} & \frac{3}{5} \end{pmatrix}\]corresponds to a reflection.  Enter the ordered pair $(a,b).$
Answer:
Let's think step by step.

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\left( -\frac{3}{5}, -\frac{4}{5} \right)
The matrix
\[\begin{pmatrix} a & b \\ -\frac{4}{5} & \frac{3}{5} \end{pmatrix}\]corresponds to a reflection.  Enter the ordered pair $(a,b).$
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