Question

If 4x + 5y = 10 and 2x + ky = 5 are coincident lines then the value of k​

Answer 1

Answer:5/2

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Answer 2

Answer:

k = 2.5

Step-by-step explanation:

Since given lines are coincident , ratios of coeeficients of x , y and constant terms are proportional

Hence

$\frac{4}{2} = \frac{5}{k} = \frac{10}{5} \\ \frac{2}{1} = \frac{5}{k} = \frac{2}{1} \\ k \: = \frac{5}{2} \\ k \: = 2.5$

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