D1-Evaluating Functions
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
If f(x) = 3x - 5, find f(4)
Back
f(4) = 3(4) - 5 = 12 - 5 = 7
2.
FLASHCARD QUESTION
Front
g(x) = 5 - 6x. Find g(-5)
Back
g(-5) = 5 - 6(-5) = 5 + 30 = 35
3.
FLASHCARD QUESTION
Front
f(x) = 2x + 5, and f(x) = 9. Find x.
Back
2x + 5 = 9; 2x = 4; x = 2.
4.
FLASHCARD QUESTION
Front
Solve for x if f(x) = 5, where f(x) = 5.
Back
x = 5.
5.
FLASHCARD QUESTION
Front
Is the relation a function? Why? (x-value 11 has two y-values)
Back
No, because the x-value 11 has two y-values pair with it.
6.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation where each input (x-value) has exactly one output (y-value).
7.
FLASHCARD QUESTION
Front
How do you evaluate a function at a specific point?
Back
Substitute the specific value into the function's equation and simplify.
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