In all exercises, other than exercises with no solution, use interval notation to express solution sets and graph each solution set on a number line. In Exercises 27–50, solve each linear inequality. -9x ≥ 36
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Linear Inequalities
Problem 34
Textbook Question
Solve each inequality. Give the solution set in interval notation. 2>-6x+3>-3
Verified step by step guidance1
Start by understanding the compound inequality: \$2 > -6x + 3 > -3\(. This means that \)-6x + 3$ is simultaneously less than 2 and greater than -3.
Break the compound inequality into two separate inequalities:
1) \$2 > -6x + 3$
2) \(-6x + 3 > -3\)
Solve the first inequality \$2 > -6x + 3\( by isolating \)x\(:
- Subtract 3 from both sides: \)2 - 3 > -6x$
- Simplify: \(-1 > -6x\)
- Divide both sides by \(-6\) (remember to reverse the inequality sign when dividing by a negative number): \(\frac{-1}{-6} < x\)
Solve the second inequality \(-6x + 3 > -3\) by isolating \(x\):
- Subtract 3 from both sides: \(-6x > -3 - 3\)
- Simplify: \(-6x > -6\)
- Divide both sides by \(-6\) (again, reverse the inequality sign): \(x < \frac{-6}{-6}\)
Combine the two inequalities to find the solution set for \(x\):
\(\frac{-1}{-6} < x < \frac{-6}{-6}\)
Simplify the fractions and express the solution in interval notation.
Verified video answer for a similar problem:This video solution was recommended by our tutors as helpful for the problem above
Video duration:
1mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Compound Inequalities
Compound inequalities involve two inequalities joined together, often with 'and' or 'or'. In this problem, the compound inequality 2 > -6x + 3 > -3 means both inequalities must be true simultaneously. Solving requires splitting it into two separate inequalities and finding the intersection of their solution sets.
Recommended video:
Linear Inequalities
Solving Linear Inequalities
Solving linear inequalities involves isolating the variable on one side by performing inverse operations, similar to solving equations. When multiplying or dividing by a negative number, the inequality sign must be reversed. This ensures the solution set correctly reflects the inequality's direction.
Recommended video:
Linear Inequalities
Interval Notation
Interval notation is a concise way to represent solution sets of inequalities using parentheses and brackets. Parentheses indicate that endpoints are not included, while brackets mean they are included. It provides a clear and standardized method to express ranges of values satisfying the inequality.
Recommended video:
Interval Notation
Related Videos
Related Practice
Textbook Question
615
views
