1. The problem statement, all variables and given/known data Find the equation of the plane that contains P=(-1,0,1) and r(t)=<3t,t,8> 2. Relevant equations 3. The attempt at a solution n * <r-r0>=0 n * <t+2, 2t, 3t> = 0 I distributed the n, adding the terms and obtained: 1/t = -2n(n+2n+3n) Clearly, I've done something wrong. If someone could point me in the right direction with even how to start this problem correctly, that would be great. Thanks!