Question

graph the inequality below on the number line. a ≤ -9

Explanation:

Step1: Identify the boundary point

The boundary point for the inequality $a\leq - 9$ is $a=-9$.

Step2: Determine the type of circle

Since the inequality is $\leq$, we use a closed - circle at $a = - 9$.

Step3: Determine the direction of the shading

The values of $a$ are less than or equal to $-9$, so we shade to the left of $-9$ on the number line.

Answer:

On the number line, place a closed - circle at $-9$ and shade to the left of $-9$.