Question

`2x-ky+7=0` और `6x-12y+15=0` का कोई हल किसके लिए नहीं है?
A. `k=-4`
B. `k=4`
C. `k=1`
D. `k=-1`

Answer 1

Correct Answer - B
`2x-ky+7=0`…………….i
`6x-12y+15=0`…………..ii
There ha sno solution for
`(a_(1))/(a_(2))=(b_(1))/(b_(2))!=(c_(1))/(c_(2))`
`implies 2/6=(-k)/(-12)`
`1/3=k/12impliesk-4`