Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
3. Functions
Intro to Functions & Their Graphs
1:14 minutes
Problem 56a
Textbook Question
Textbook QuestionLet ƒ(x)=-3x+4 and g(x)=-x^2+4x+1. Find each of the following. Simplify if necessary. See Example 6. ƒ(-7/3)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Function Evaluation
Function evaluation involves substituting a specific input value into a function to determine its output. For example, to evaluate ƒ(x) at x = -7/3, you replace x in the function ƒ(x) = -3x + 4 with -7/3, allowing you to calculate the corresponding output value.
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Linear Functions
A linear function is a polynomial function of degree one, represented in the form ƒ(x) = mx + b, where m is the slope and b is the y-intercept. In this case, ƒ(x) = -3x + 4 is a linear function, indicating a straight line when graphed, with a slope of -3 and a y-intercept of 4.
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Simplification of Expressions
Simplification of expressions involves reducing mathematical expressions to their simplest form. This can include combining like terms, factoring, or performing arithmetic operations. In the context of evaluating ƒ(-7/3), simplification may be necessary to present the final answer in a clear and concise manner.
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