Review of Functions

Front

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

Back

1

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)

Front

What is the domain? Options: x = 2, all real numbers, y = 2, none of these

Back

all real numbers

Front

Evaluate f(33) if f(x) = x/3

Back

11

Front

What is the range? Options: x = 2, all real numbers, y = 2, none of these

Back

y = 2

Front

Define a function.

Back

A function is a relation that assigns exactly one output for each input.

Front

What is the difference between domain and range?

Back

Domain is the set of all possible input values (x), while range is the set of all possible output values (y).

Front

Evaluate f(0) if f(x) = 2x + 1

Back

1

Front

What does it mean for a relation to be a function?

Back

Each input must correspond to exactly one output.

Front

Identify the function: (1,2), (2,3), (3,4), (1,5)

Back

Not a function (1 maps to 2 and 5).