###### Exercise 64

A set is written using set-builder notation. Write it using interval notation.

\(\displaystyle{ \left\{ x \mid {{x}} \leq {-{\frac{9}{7}}} \right\} }\)

A set is written using set-builder notation. Write it using interval notation.

\(\displaystyle{ \left\{ x \mid {{x}} \leq {-{\frac{9}{7}}} \right\} }\)