Lesson 2.1: Relations and Functions Answers

less than or equal to✔ less thangreater than or equal togreater than

Use the drop downs to determine which symbols would complete the inequality for the range.

less than or equal to✔ less thangreater than or equal togreater than

What is the range of the relation? ✔ 46-4-6

What is the domain of the relation? X -64✔ -46

Is the relation a function? yesX no

The set of ordered pairs above: functionnot a function

The mapping diagram above: functionnot a function

functionnot a function

The table above: functionnot a function

Which ordered pairs prevent this relation from being a function?

Suppose that you could replace the ordered pair (1, 4) to make the relation R (shown left) into a function. Which ordered pair would work?

What does the notation f(0) mean? Multiply f by 0✔ the output (y-value) when x = 0the value of x when the output is 0

f(0) =

What is the special name of f(0)? the x-intercept✔ the y-intercept

The graph above: one-to-one functionfunction (but not one-to-one) ✔ relation (but not a function)

The graph above: ✔ one-to-one functionfunction (but not one-to-one) relation (but not a function)

What is the independent (input) variable?✔ n, the number of necklaces$6, the shipping costc, the total cost (in dollars)

What is the dependent (output) variable?n, the number of necklaces$6, the shipping cost✔ c, the total cost (in dollars)