Math, asked by faisalgufran1234, 3 months ago

For what value of k. will the equation x+2y+7=0,2x+ky+14=O represent concident lines​

Answers

Answered by keerthireddyeada7733
1

Answer:

k= 4

Step-by-step explanation:

concident lines means . second line is twice the first line .

so,

first line is x+2y+7.

second line is twice the first line , i.e 2(x+2y+7) = 2x+4y+14

Answered by dkchakrabarty01
2

Answer:

Criterion for coincidence is

a1/a2 = b1/b2 = c1/C2

1/2=2//k

This gives k=4

Since there is one unknown k, so equating a1/a2= b1/b2 is sufficient. You can also take b1/b2= c1/c2

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