Absolute value notation
We want to find an equation that expresses the following graph
The distance 1 can correspond to +1 or -1, then the distance 1 is expressed by
|1|
We know that is the distance from x to 10 can be expressed by
|x - 10| since it is the positive value of the substractions
If the distance from x to 10 is 1 then the expression is
Answer: |x - 10 | = 1