What does it mean when we say 'y is a function of x'?
Identifying Functions & Function Notation Practice Algebra

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•
Mathematics
•
8th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
It means that y depends on x.
2.
FLASHCARD QUESTION
Front
Solve the equation: 5.5 - x = -4.5 - x
Back
No Solution
3.
FLASHCARD QUESTION
Front
What is the equation of a horizontal line?
Back
y = c (where c is a constant) and it is a function because it passes the vertical line test.
4.
FLASHCARD QUESTION
Front
Which variable is the dependent variable in a function?
Back
y is the dependent variable.
5.
FLASHCARD QUESTION
Front
How can you determine if a graph represents a function?
Back
Use the vertical line test: if a vertical line intersects the graph at more than one point, it is not a function.
6.
FLASHCARD QUESTION
Front
What is a function?
Back
A relation where each input (x) has exactly one output (y).
7.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
A method to determine if a curve is a function by checking if a vertical line crosses the graph more than once.
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