Find fg and determine the domain for each function. f(x) = 2x + 3, g(x) = x − 1
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
3. Functions
Intro to Functions & Their Graphs
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State the inputs and outputs of the following relation. Is it a function? {(2,5),(0,2),(2,9)}
A
B
C
D
Verified step by step guidance1
Identify the set of ordered pairs given in the relation: {(2,5), (0,2), (2,9)}.
Determine the inputs (domain) of the relation by listing the first element of each ordered pair: {2, 0}.
Determine the outputs (range) of the relation by listing the second element of each ordered pair: {5, 2, 9}.
To check if the relation is a function, ensure that each input is associated with exactly one output. In this relation, the input '2' is associated with two different outputs: '5' and '9'.
Since the input '2' maps to more than one output, the relation is not a function.
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Intro to Functions & Their Graphs practice set

