What is a function?
Evaluating Functions

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•
Mathematics
•
8th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation that assigns exactly one output for each input from a set of inputs.
2.
FLASHCARD QUESTION
Front
What does it mean to evaluate a function?
Back
To evaluate a function means to calculate the output value for a given input.
3.
FLASHCARD QUESTION
Front
Evaluate y = x + 5 when x = 3.
Back
y = 8
4.
FLASHCARD QUESTION
Front
Evaluate y = 7x when x = -5.
Back
y = -35
5.
FLASHCARD QUESTION
Front
What is the formula for a quadratic function?
Back
A quadratic function is generally expressed as f(x) = ax² + bx + c.
6.
FLASHCARD QUESTION
Front
Evaluate f(x) = 2x² + 5x - 17 for x = -1.
Back
f(-1) = -20
7.
FLASHCARD QUESTION
Front
What is the output of f(x) = 2x² + 5x - 17 when x = 0?
Back
f(0) = -17
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