Hi, I need some help with these questions below:

I am really unsure if these sketches are correct. Can someone please check them.. I am not sure if i have the plane correct. Please let me know! thank you so much in advance because I am desperate to see if these are correct

Sketch the following planes in 3-space:

a) pi: 3x-2y-6=0

b) pi: 4y-z=0

c) pi: 2x-3y+4z-12=0

d) pi: 2x-2y+z=0

e) pi: x-3=0

f) pi: z+2=0