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Question 75
If the equations 6x - 5y + 11 = 0 and 15x + ky- 9 = 0 have no solution, then the
value of k is:
Solution
The correct option is C.
 If two lines has no solution then lines are parallel.Â
 So, $$\frac{a_{1}}{a_{2}}$$ = $$\frac{b_{1}}{b_{2}}$$ $$\ne$$ $$\frac{c_{1}}{c_{2}}$$
     $$\Rightarrow$$ $$\frac{6}{15}$$ = $$\frac{-5}{k}$$
       k = -12.5
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