1. What is pair of linear equations in two variables?
A. a polynomial with one variable
B. a polynomial with three terms
C. a set of two or more linear equations in the same two variables
D. set of two linear equations in same two variables

2. If a system of linear equations has one solution, what does this mean about the two lines?
A. parallel lines
B. intersecting lines
C. coinciding lines
D. no lines