Function Review

Front

Find f(9) if f(x) = 2x - 7

Back

f(9) = 2(9) - 7 = 18 - 7 = 11

Front

What is the definition of a function?

Back

A function is a relation where every input has only ONE output.

Front

State if the function is linear or nonlinear. If linear, state the constant rate of change: f(x) = 3x + 2

Back

Linear, 3

Front

Which set of values is a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1) is a function.

Front

Is this mapping a function or not a function? (1,2) (1,3) (2,4) (3,5)

Back

Not a Function

Front

What is the constant rate of change in the function f(x) = 5x + 1?

Back

The constant rate of change is 5.

Front

Identify if the following is a function: {(1,2), (2,3), (3,4), (1,5)}

Back

Not a Function

Front

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

Back

f(4) = 4^2 = 16

Front

What is the domain of the function f(x) = 1/x?

Back

The domain is all real numbers except x = 0.

Front

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

Back

The range is all real numbers greater than or equal to 0.