Question

HELP!

Which of the following is true about the relation?



There are 5 elements in the range.

The domain is {1 2 3}.

The mapping diagram shows 3 ordered pairs.

1 is a y-coordinate.

Answer 1

The domain is {1 2 3}.

Answer 2

The range is on the right. The domain is on the left. An ordered pair is any one of those lines. Generally, the domain is the x coordinate and the range is the y coordinate.

That should be all the information you need to figure it out on your own.

Answer 3

um

Answer 4

Haha okay. Let's break it down.
A function is a rule for mapping one set of things to another set of things. Usually those things are numbers.

The things on the left are the domain, or the x coordinate and they get mapped to the things on the right, or the y coordinate.
Each line represents a mapping and can be written as an ordered pair like this: (x,y) where x is on the left side and y is on the right.

So first question. "There are 5 elements in the range"
The range is on the right, and has 4, 8, 10, and 14. That's four elements. So false.

Answer 5

Second question: "The domain is {1 2 3}"
The domain is on the left and it has 1, 2, and 3 in it. So true!

Answer 6

Third: "The mapping diagram shows 3 ordered pairs"
Each line represents an ordered pair. There are 5 lines, so there are 5 ordered pairs. So false.

Answer 7

Fourth: "1 is a y coordinate"
The y coordinates are on the right, or part of the range. 1 is not in the right column box. So false.