A horizontal line is one for which the value of y is the same for the entire length of the line. Therefore this type of line can be expressed as below:
![y=c](https://tex.z-dn.net/?f=y%3Dc)
Where "c" is a constant that changes the position of the line on the coordinate plane. If c is equal to 2, then we have a constant line that crosses the y-axis at the position 2 for example.
Here are some examples of equations equal to 32.
16x2=32
64/2=32
It's 4 and u should know that by now.