Evaluating Functions
Flashcard
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.
2.
FLASHCARD QUESTION
Front
What does f(2) represent in a function?
Back
f(2) represents the output of the function when the input is 2.
3.
FLASHCARD QUESTION
Front
Evaluate f(x) = x^2 at x = -8. What is f(-8)?
Back
f(-8) = 64.
4.
FLASHCARD QUESTION
Front
What is the formula for a quadratic function?
Back
The formula for a quadratic function is f(x) = ax^2 + bx + c, where a, b, and c are constants.
5.
FLASHCARD QUESTION
Front
Evaluate f(x) = x^2 - 5x at x = 4. What is f(4)?
Back
f(4) = -4.
6.
FLASHCARD QUESTION
Front
If f(x) = 2x^2 + 5x - 3, what is f(-1)?
Back
f(-1) = -6.
7.
FLASHCARD QUESTION
Front
What is the significance of negative signs in function evaluation?
Back
Negative signs can change the value of the output significantly; always pay attention to them when substituting values.
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