Functions as Equations flashcard

Front

Does this mapping diagram represent a function?

Back

Yes, because there are no repeating input values.

Front

f(x) is the same thing as ______.

Back

y

Front

Given g(x) = 4x - 7, find g(-9).

Back

g(-9) = -43.

Front

If f(x) = -4x - 5, what is f(1)?

Back

f(1) = -9.

Front

If f(x) = 2x + 1, what would be your first step to find f(1)?

Back

Plug a 1 in for all the x's.

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 f(a) for a function f(x)?

Back

Substitute 'a' for 'x' in the function's equation.