[![enter image description here](https://i.stack.imgur.com/4qOtK.png)](https://i.stack.imgur.com/4qOtK.png)

I was given the question above. Looking at that I tried to make the vectors into parametric equations and then solve them. The problem I encountered is that 

1) $x = -3$, a constant and

2) There's $2$ solutions to the last $2$ columns: $z= -3+5a$ and $t= 4+3a$

How do I go from this step to creating a linear equation?