Question
Write the inequality in interval notation and graph the interval.
\( -5
Ask by Rowe Marsh. in the United States
Mar 08,2025
Ask by Rowe Marsh. in the United States
Mar 08,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The inequality \( -5 < x \leq 3 \) is written in interval notation as \( (-5, 3] \). On the number line, this is represented by an open circle at \(-5\) and a closed circle at \(3\), with the line shaded between them.
Solution
1. The inequality is given as:
\[
-5 < x \leq 3
\]
2. To write this in interval notation, note that:
- The inequality does not include \(-5\), so we use a parenthesis at \(-5\).
- The inequality includes \(3\), so we use a bracket at \(3\).
Thus, the interval notation is:
\[
(-5, 3]
\]
3. To graph the interval on a number line:
- Draw a horizontal line and mark the points \(-5\) and \(3\).
- Place an open circle at \(-5\) to indicate that \(-5\) is not included.
- Place a closed circle at \(3\) to indicate that \(3\) is included.
- Shade the region between \(-5\) and \(3\).
The graph looks like this:
\[
\begin{array}{ccccccccccc}
\cdots & -6 & \quad -5 & \quad -4 & \quad \cdots & \quad 2 & \quad 3 & \quad 4 & \quad \cdots \\
& & \circ & \underline{\hspace{1cm}} & & \underline{\hspace{1cm}} & \bullet & & \\
\end{array}
\]
Here, the open circle \(\circ\) at \(-5\) indicates that \(-5\) is not included, and the filled circle \(\bullet\) at \(3\) indicates that \(3\) is included, with the region between them shaded.
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Extra Insights
The inequality \( -5 < x \leq 3 \) can be expressed in interval notation as \( (-5, 3] \). This indicates that \( x \) is greater than -5 but less than or equal to 3. To graph this interval on a number line, you would place an open circle at -5 (indicating that -5 is not included) and a closed circle at 3 (indicating that 3 is included). Then, shade the area between these points to show all the values that satisfy the inequality. Happy graphing!