Question
Mathematics Question on System of Linear Equations
Consider the following linear equations:-
3x+7y+z=0
5x+9y-z=0
9x+13y+kz=0
For what values of k the above system of equations has an infinite number of solutions -
A
2
B
-5
C
-7
D
6
Answer
-5
Explanation
Solution
The correct option is(B):-5