Relations and Functions - Review

Front

How would you write y = 2x - 3 in function notation?

Back

f(x) = 2x - 3

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 variable represents the input in a function?

Back

p

Front

If I know that f(2) = 4, what is another way I can write my answer?

Back

(2, 4)

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

What is the output of the function f(x) = 3x + 2 when x = 4?

Back

f(4) = 14

Front

What is the domain of the function f(x) = x^2?

Back

All real numbers.

Front

What is the range of the function f(x) = x^2?

Back

All real numbers greater than or equal to 0.

Front

What does it mean for a function to be one-to-one?

Back

Each output is paired with exactly one input.

Front

How do you find the inverse of a function?

Back

Swap the x and y variables and solve for y.