To solve the inequality \(-4x \geq 20\), we will isolate \(x\).
- Divide both sides of the inequality by \(-4\). Remember that when you divide by a negative number, you must reverse the inequality sign:
\[ x \leq \frac{20}{-4} \]
- Simplifying the right side gives:
\[ x \leq -5 \]
The solution set for the inequality is therefore:
\[ { x \mid x \leq -5 } \]
Graphing the Solution Set:
- On a number line, you would put a solid dot (or circle) on \(-5\) to indicate that it is included in the solution (since the inequality is \(\leq\)).
- Shade all the numbers to the left of \(-5\) to show that \(x\) can be any value less than or equal to \(-5\).
The final representation of the solution set is:
\({ x \mid x \leq -5 }\)