form this `2y + 3z = 6` equation i take the `x = 0`. therefor `2 - t = 0` and `t = 2`. then i got `y = 6` and `z = 3` respectively from `y = 3t, z = −1 + 2t`. 
but the value does not satisfy the equation `2y + 3z = 6`.
was my approach wrong ? if then how to solve it ?
sorry for my bad English.