Functions as Equations Review

Front

If a question asks you to find x when f(x)=2, what does that mean?

Back

Let y = 2.

Front

Evaluate f(-2) if f(x) = x + 3

Back

1

Front

Is this graph a function or not a function?

Back

Not a Function

Front

f(x) is the same thing as ______.

Back

y

Front

f(x) = x² + 9; g(x) = x - 9. Find f(x) - g(x).

Back

x² - x + 18

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is the domain of a function?

Back

The set of all possible input values (x-values).

Front

What is the range of a function?

Back

The set of all possible output values (y-values).

Front

What does f(x) represent in a function?

Back

The output value of the function for a given input x.

Front

How do you find the value of f(a) for a function f(x)?

Back

Substitute a for x in the function.