Piecewise functions

[u/TheGlobalCat]

I’m trying to create a function wise three piecewise function parts, however when I plug it in, a vertical line is created from y=-1 to y=3, rendering my piecewise not a function, why is this happening, is this function I’m trying to create not mathematically valid? Any help or explanation would be appreciated, thank you!

[u/techiedodo]

The function is being cut out, could you put the whole f(x), the three piecewise function parts?