Math Problem Statement
Solve the inequality. (Enter your answer using interval notation.) |5x − 1| < 7
Solution
We are given the inequality:
To solve this, we must consider the definition of absolute value. The inequality (where is an expression and is a positive number) is equivalent to the double inequality:
Step 1: Rewrite the inequality without the absolute value
The inequality becomes:
Step 2: Solve for
First, isolate by adding 1 to all parts of the inequality:
Now, divide the entire inequality by 5 to isolate :
This simplifies to:
Step 3: Write the solution in interval notation
The solution is the set of -values between and , not including the endpoints. So, the solution in interval notation is:
Let me know if you'd like further details or explanations!
Here are 5 related questions for you to consider:
- How do you solve inequalities involving or ?
- How does the solution change if the inequality is ?
- How would you solve ?
- What is the general method for solving inequalities with absolute values?
- How do you graph the solution of on a number line?
Tip: Always check your solution by plugging in values from within and outside your interval to verify if the inequality holds true.
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Math Problem Analysis
Mathematical Concepts
Algebra
Absolute Value Inequalities
Linear Inequalities
Formulas
|A| < B → -B < A < B
Linear inequality solving methods
Theorems
Absolute value property for inequalities
Suitable Grade Level
Grades 8-10