FUNCTIONS ONE 2

Question

Which of the following is an accurate description of a function f(x) of the variable x?

Select one:

a. f(x) is a relation containing the variable x.

b. f(x) describes how the value of an expression containing x changes as x changes.

c. f(x) is an expression that results in exactly one value for each value of x.

d. all of the above

True or False. The ordered pairs (5, 12), (–1, –1), and (–3, –3) represents a function.

Select one:

True

False

One way to know that a relation is a function is:

Select one:

a. The relation’s value can be determined for any value of x.

b. The relation has a real value for all possible values of x.

c. The graph of the relation never crosses itself.

d. The graph of the relation passes the vertical line test.

 

Answer 1

1)

Option d is the correct.

2)

A  function  is a special type of relation in which each element of the domain is paired with exactly one element of the range.

The relation is  a function . since every element have diffrent image.

Option true is correr

3)

Option d is correct.