a. −2y+3z−1=0−2y+3z−1=0−2y+3z−1=0 b. ⟨0,−2,3⟩⋅⟨x−1,y−1,z−1⟩=0\lang 0,−2,3\rang\cdot\lang x−1,y−1,z−1\rang =0⟨0,−2,3⟩⋅⟨x−1,y−1,z−1⟩=0 c. x=0,y=−2t,z=3t,t∈R x=0,y=−2t,z=3t, t\isin\Reals x=0,y=−2t,z=3t,t∈R