Question

change into passive voice why are you playing hockey

Answer 1

      When we change a sentence from active voice (direct speech) into indirect speech or passive voice, the subject becomes the object . The object becomes the subject now.  Also the tense of the verb remains the same.

   Here the verb is in present continuous form.

 
Active voice:      "Why are you playing Hockey ?"

Passive voice:   "Why is hockey being played by you?"
                          "Why is hockey being played? "


Often we ignore "by you", as it is implied and implicit.

Answer 2

Hey there!!

Passive voice

Why is hockey being played by you.