Identifying Functions & Function Notation Practice Algebra

Front

What does it mean when we say 'y is a function of x'?

Back

It means that y depends on x.

Front

Solve the equation: 5.5 - x = -4.5 - x

Back

No Solution

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.

Front

Which variable is the dependent variable in a function?

Back

y is the dependent variable.

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.

Front

What is a function?

Back

A relation where each input (x) has exactly one output (y).

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.

Front

If x = 5, what is the value of y in the function y = 2x + 3?

Back

y = 2(5) + 3 = 13.

Front

What does the term 'independent variable' refer to?

Back

The variable that is manipulated or changed in an experiment, often represented as x.

Front

What does the term 'dependent variable' refer to?

Back

The variable that is measured or observed in an experiment, often represented as y.