Question 1005561
Without graphing, answer the questions for the following linear system. 

y-x=-9
x+y=12

A) Is the system inconsistent or the equations dependent, or neither?
Neither
---------
B) Is the graph a pair of intersecting lines, a pair of parallel lines or one line?
a pair of intersecting lines
--------
C) Does the system have one solution, no solution, or an infinite number of solutions?
1