Express the Interval in Set-Builder Notation and Graph the Interval $$\left( - \infty , \frac { 9 } { 7 } \right)$$

Multiple Choice

Express the interval in set-builder notation and graph the interval on a number line.
- $$\left( - \infty , \frac { 9 } { 7 } \right)$$

A) $\left\{ x \mid x < \frac { 9 } { 7 } \right\}$

B) $\left\{ x \mid x > \frac { 9 } { 7 } \right\}$

C) $\left\{ x \mid x \leq \frac { 9 } { 7 } \right\}$

D) $\{ x \mid 7 \leq x \leq 9 \}$