Let us assume we have the line whose parametric equations are $x=-6+5t, y=5+3t, z=-2 - 12.5t$ and the plane with equation $2x+5y+2z - 9=0$. This line sits entirely inside this plane, but let’s pretend we did not know that, and attempted to find their point of intersection by substituting the parametric equations into the plane equation. What goes wrong? Be sure to phrase your answer in such a way that it explains how someone could tell, in a future situation, that a line sits entirely inside a plane.