Which of the following best describes the amplitude of the graph of the function ?
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Basics of Graphing
Problem 77
Textbook Question
Rewrite each statement with > so that it uses < instead. Rewrite each statement with < so that it uses >. -9 < 4
Verified step by step guidance1
Identify the inequality symbol in the given statement. Here, the statement is \(-9 < 4\), which uses the less than symbol \(<\).
Recall that the inequality \(a < b\) means that \(a\) is less than \(b\). To rewrite this using the greater than symbol \(>\), we reverse the inequality and swap the two sides.
Swap the two sides of the inequality: the left side becomes \$4\( and the right side becomes \)-9$.
Change the inequality symbol from \(<\) to \(>\) to maintain the truth of the statement after swapping.
Write the new inequality as \$4 > -9$, which is the equivalent statement using the greater than symbol.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Inequality Symbols and Their Meaning
Inequality symbols like < (less than) and > (greater than) compare two values to show their relative size. Understanding what each symbol represents is essential to correctly interpret and rewrite inequalities.
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Finding the Domain and Range of a Graph
Reversing Inequalities
When rewriting inequalities by switching the direction of the symbol, the inequality sign must be reversed. For example, if the original statement is a < b, rewriting it with > requires changing it to b > a.
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Finding the Domain and Range of a Graph
Properties of Inequalities with Negative Numbers
Working with negative numbers in inequalities requires careful attention, as their order on the number line is reversed compared to positive numbers. Recognizing how negative values relate helps avoid mistakes when rewriting inequalities.
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