Find the value(s) of \(c\) for the following pair of equations.
 
(i) \(-3x + 3y = 7\) and \(6cx - 3y = 1\), if the lines represented by these equations are intersecting at a unique point.
 
Answer:
 
\(c \neq\) ii
 
[Note: Enter the fraction without simplifying it]
 
 
(ii)  \(7x + y - 5 = 0\) and \(cx - 2y - 8 = 0\), if the pair of equations has a unique solution.
 
Answer:
 
\(c \neq\)