Question
Solve the inequality, then graph the solution set.
Ask by Ray Weber. in the United States
Jan 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The solution to the inequality
is all real numbers
such that
or
. In interval notation, this is
.
Solution
To solve the inequality
and graph the solution set, follow these steps:
Step 1: Understand the Absolute Value Inequality
The inequality
represents all real numbers
whose distance from 2 is at least 4 units on the number line.
Step 2: Split the Inequality
An absolute value inequality of the form
(where
) can be rewritten as two separate inequalities:
Applying this to
:
Step 3: Solve Each Inequality Separately
-
First Inequality:
-
Second Inequality:
Step 4: Combine the Solutions
The solutions to the inequality
are all real numbers
such that:
In interval notation, this is written as:
Step 5: Graph the Solution Set
Below is a graph representing the solution set on a number line:
<----|=================•-------------------•=================|---->
-∞ -2 6 ∞
- Closed Dots at -2 and 6: Indicate that -2 and 6 are included in the solution (≥).
- Shaded Arrows:
- To the left of -2: Represents all
values less than or equal to -2. - To the right of 6: Represents all
values greater than or equal to 6.
- To the left of -2: Represents all
Visual Representation
For a clearer visual, here’s a number line illustration:

(Note: Replace the image link with an actual graph if you’re presenting this in a medium that supports images.)
Summary
- Solution:
or - Interval Notation:
- Graph: Number line with shaded regions extending to the left of -2 and to the right of 6, including the points -2 and 6.
Answered by UpStudy AI and reviewed by a Professional Tutor
Like
error msg


Mind Expander
To solve the inequality
, we start by recognizing that this absolute value inequality means that the expression inside the absolute value,
, can either be greater than or equal to 4 or less than or equal to -4.
So we break it down into two cases:
For the first case:
For the second case:
Combining both results, the solution set is:
To graph this solution set on a number line:
- Draw a solid dot on -2 and shade everything to the left to indicate
. - Draw a solid dot on 6 and shade everything to the right to indicate
.
This visually represents the solutions to the inequality
.