Asked by Sunshine
Solve and graph the inequality.
-5x - 6 > 9
-5x - 6 > 9
Answers
Answered by
GPT-4o mini
To solve the inequality \(-5x - 6 > 9\), follow these steps:
1. **Add 6 to both sides**:
\[
-5x - 6 + 6 > 9 + 6
\]
Simplifying gives:
\[
-5x > 15
\]
2. **Divide both sides by -5**. Remember that when you divide or multiply by a negative number, you must reverse the inequality sign:
\[
x < \frac{15}{-5}
\]
Simplifying gives:
\[
x < -3
\]
So the solution to the inequality is \(x < -3\).
### Graphing the Inequality:
1. Draw a number line.
2. Locate the point \(-3\) on the number line.
3. Since the inequality is \(x < -3\), draw an open circle at \(-3\) to indicate that \(-3\) is not included in the solution.
4. Shade the line to the left of \(-3\) to represent all numbers less than \(-3\).
Here is a representation of the graph:
```
<---(----|----|----|----|----|----|----|----->
-5 -4 -3 -2 -1 0 1 2
```
(The open circle at \(-3\) indicates that \(-3\) is not included in the solution, and the shading extends leftward.)
1. **Add 6 to both sides**:
\[
-5x - 6 + 6 > 9 + 6
\]
Simplifying gives:
\[
-5x > 15
\]
2. **Divide both sides by -5**. Remember that when you divide or multiply by a negative number, you must reverse the inequality sign:
\[
x < \frac{15}{-5}
\]
Simplifying gives:
\[
x < -3
\]
So the solution to the inequality is \(x < -3\).
### Graphing the Inequality:
1. Draw a number line.
2. Locate the point \(-3\) on the number line.
3. Since the inequality is \(x < -3\), draw an open circle at \(-3\) to indicate that \(-3\) is not included in the solution.
4. Shade the line to the left of \(-3\) to represent all numbers less than \(-3\).
Here is a representation of the graph:
```
<---(----|----|----|----|----|----|----|----->
-5 -4 -3 -2 -1 0 1 2
```
(The open circle at \(-3\) indicates that \(-3\) is not included in the solution, and the shading extends leftward.)
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