A linear system where? m, b,? n, and c are nonzero constants is shown below
y = mx+b
y = nx+c
Discuss the relationships among the four constants if the system has a unique solution. Choose the correct answer below.
A. If m ? n, then the lines are not parallel and do not overlap and must intersect at a point.
B. If b ? c, then the lines do not overlap and must intersect at a point.
C. If b = c, then the lines do not overlap and must intersect at a point on the yaxis.
D. If m = n and b = c, then the lines overlap and the solution is unique.
Ans: A. If m ? n, then the lines are not parallel and do not overlap and must intersect at a point.
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A. 
B. 
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