To solve the inequality \( 4x - 9 \geq -21 \), follow these steps:
Step 1: Add 9 to both sides.
Step 2: Divide both sides by 4.
Step 3: Write the solution in interval notation and represent it on a number line.
Now, let's order the steps:
-
Add 9 to both sides:
\( 4x - 9 + 9 \geq -21 + 9 \)
This simplifies to \( 4x \geq -12 \). -
Divide both sides by 4:
\( \frac{4x}{4} \geq \frac{-12}{4} \)
This simplifies to \( x \geq -3 \). -
Represent the solution on a number line. This should show a solid dot at -3 and shading to the right, indicating all numbers greater than or equal to -3 are included.
For the Number Line:
You would look for a representation that has a solid dot or closed circle at -3 and shading extending to the right.
Let me know if you need further clarification or help!