How do I type this into desmos calculator correctly?

Answer:
[tex]y=\left \{ {{x < N:x+N}}\right\}[/tex]
[tex]y=\left \{ {{x > = N:Nx-N}}\right\}[/tex]
Step-by-step explanation:
N stands for a number. I can't read the numbers in the photo.
In brackets start with the if statement and then use a ":" and then write the function.
I tried to make out the numbers. DOUBLE-CHECK! Here is a photo.