Introduction to Functions

Which set of ordered pairs represents a function?

{(3, -1), (7, 1), (-6, -1), (9, 1), (2, -1)}

What is the domain of the given function? {(3, -2), (6, 1), (-1, 4), (5, 9), (-4, 0)}

{x | x = -4, -1, 3, 5, 6}

What is the domain of the function shown in the mapping?

{x | x = -5, -3, 1, 2, 6}

What is the range of the given function? {(-2, 0), (-4, -3), (2, -9), (0, 5), (-5, 7)}

{y | y = -9, -3, 0, 5, 7}

The table shows ordered pairs of the function y = 8 - 2x. When x = 8, the value of y is

-8

What is the domain of the function on the graph?

all real numbers greater than or equal to -3

What is the range of the function on the graph?

all real numbers greater than or equal to 2

What is the range of the function on the graph?

all real numbers less than or equal to 3

Raj's bathtub is clogged and is draining at a rate of 1.5 gallons of water per minute. The table shows that the amount of water remaining in the bathtub, y, is a function of the time in minutes, x, that it has been draining. What is the range of this function?

all real numbers such that 0 ≤ y ≤ 40

Which graph shows a set of ordered pairs that represents a function?

b