To solve the inequality
\[ \frac{p + 2}{2} \leq -1, \]
we first start by multiplying both sides by 2 to eliminate the fraction:
\[ p + 2 \leq -2. \]
Next, we isolate \(p\) by subtracting 2 from both sides:
\[ p \leq -2 - 2, \]
which simplifies to:
\[ p \leq -4. \]
Now, let's represent \(p \leq -4\) on a number line.
- Identifying Endpoints: The endpoint in this case is \(-4\).
- Closed/Open Endpoint: Since the inequality is less than or equal to (\(\leq\)), we will use a closed dot at \(-4\) to indicate that this point is included in the solution set.
- Graphing the solution: The solution includes all numbers less than or equal to \(-4\).
Number Line Graph:
- Mark \(-4\) with a closed dot.
- Shade to the left of \(-4\) to indicate all numbers less than \(-4\).
Here's a textual representation:
<---●============================>
-4
In summary, the solution to the inequality is \(p \leq -4\), represented on the number line with a closed dot at \(-4\) and shading to the left.