What is a function?
IM Algebra Unit 4 Test

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation that assigns exactly one output for each input. It can be represented by an equation, a graph, or a table.
2.
FLASHCARD QUESTION
Front
What does the inverse function represent?
Back
The inverse function gives the input value when the output value is known. For example, if a function gives the cost based on visits, the inverse gives the number of visits based on the cost.
3.
FLASHCARD QUESTION
Front
How do you write a function in function notation?
Back
Function notation is written as f(x) = expression, where f is the function name, x is the input variable, and the expression defines the output.
4.
FLASHCARD QUESTION
Front
What is a piecewise function?
Back
A piecewise function is a function that has different rules or expressions for different intervals of the input.
5.
FLASHCARD QUESTION
Front
How do you evaluate a function at a specific input?
Back
To evaluate a function at a specific input, substitute the input value into the function's equation and simplify.
6.
FLASHCARD QUESTION
Front
What is the cost function for a gym visit defined as c(n) = 50 + 4n?
Back
This function represents the total monthly cost in dollars for visiting the gym n times, where 50 is the base fee and 4 is the cost per visit.
7.
FLASHCARD QUESTION
Front
If c(8) = 82, what does this mean in context?
Back
It means that if a person visits the gym 8 times in a month, the total cost will be $82.
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