Types of solutions
for systems of planes (3 variable equations)
What is a solution of system of equations with 3 variables?
Why are we going to use 3 planes?
If you want to solve an equation with 2 variables, you need 2 equations.
You can's solve x + y =1 , right? That's because you 1 equation with 2 variables
Similarly, if you have an equation with 3 variables, (3 planes), you're going to need 3 equations to solve it
Two important terms
Means that there is at least 1 intersection (solutions)
Means that there are no intersections(solutions)