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A boolean expression is either true or false. The following examples use the operator `==`

, which compares two operands and produces `True`

if they are equal and `False`

otherwise:

```
1 == 1
```

It returns `True`

.

```
2 == 1
```

It returns `False`

.

`True`

and `False`

are special values that belong to the class bool,

```
print(type(True))
```

It returns `<class 'bool'>`

The `==`

operator is one of the comparison operators; the others are:

```
x != y # x is not equal to y
x > y # x is greater than y
x < y # x is less than y
x >= y # x is greater than or equal to y
x <= y # x is less than or equal to y
x is y # x is the same as y
x is not y # x is not the same as y
```

Avoid the mistake of using a single equal sign (

`=`

) instead of a double equal sign (`==`

).`=`

is an assignment operator and`==`

is a comparison operator.There is no such thing as

`=<`

or`=>`

.

Please define a function with the name `is_on_line`

which would take three arguments say x1, x2 and x. This function should return `True`

if x is on the one dimensional line joining x1 and x2 like the following diagram:

```
x1-----x-----x2
```

If x is outside the line joining x1 and x2, it should return `False`

for example:

```
x1-----x2-----x
```

Please note that if x is equal to x1 or x2, it is considered at line. Also, the x1, x2 and x can be negative numbers.

Test Cases:

Input: is_on_line(10, 20, 30)

Expected Output: `False`

Input: is_on_line(10, 20, 20)

Expected Output: `True`

Input: is_on_line(10, 20, -10)

Expected Output: `False`

Input: is_on_line(-4, -5, -4.5)

Expected Output: `True`

*Please note that the previous question in which you had to write bool_func has been removed. So most of the comments below are obsolete now.*

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