Evaluating Functions

Flashcard
•
Mathematics
•
8th - 9th Grade
•
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 it mean to evaluate a function?
Back
To evaluate a function means to find the output value for a given input by substituting the input into the function's equation.
3.
FLASHCARD QUESTION
Front
If g(x) = 11 - x, what is g(4)?
Back
g(4) = 11 - 4 = 7.
4.
FLASHCARD QUESTION
Front
If f(x) = 4x + 5, what is f(4)?
Back
f(4) = 4(4) + 5 = 16 + 5 = 21.
5.
FLASHCARD QUESTION
Front
If f(x) = x + 3, what is f(-5)?
Back
f(-5) = -5 + 3 = -2.
6.
FLASHCARD QUESTION
Front
What is the formula for a quadratic function?
Back
A quadratic function is generally expressed as f(x) = ax² + bx + c, where a, b, and c are constants.
7.
FLASHCARD QUESTION
Front
If f(x) = 3x² - 11, what is f(-5)?
Back
f(-5) = 3(-5)² - 11 = 3(25) - 11 = 75 - 11 = 64.
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