Math Relationships Relationship table

# Representation of relationships

If you have given relationships, you want to present them understandable for everyone.

## Arrow diagram

We already know the following presentation:

$\text{initial value}\longmapsto$ $\text{assigned value}$

### Example

$\text{Weight}\longmapsto\text{Price}$

• $1 \longmapsto 4$
• $2 \longmapsto 8$
• $3 \longmapsto 12$
• ...

## Relationship table

Since we assign exactly one size to each initial size, a table is very well suited for clarity.

!

### Remember

An relationship table (or value table) has two columns. On the left are the initial values and on the right the assigned size.

### Example

As you can see, the (vertical) table view is very similar to the example above.

Weight (in kg)Price (in €)
14
28
312
i

### Info

Even a horizontal relationship table with two rows is possible. The table would simply be rotated in this case.

### Example

 Weight (in kg) Price (in €) 1 2 3 4 8 12