Question

find the value of k, 2x+y-3= 0 and 5x+ky+7=0 has no solution​

Answer 1

Answer:

k=5/2

Explanation:

2x+y-3= 0

∴2x+y=3-----(1)

5x+ky+7=0

∴5x+ky=-7---(2)

Comparing eq.1 and 2 with a1x+b1y=c1 and a2x+b2y+c2  respectively

we get

a1=2,b1=1, c1=3 ,

a2=5,b2=k,c2=-7

The equations has no solution---(given)

∴a1/a2= b1/b2

∴2/5=1/k

∴2*k=1*5

∴2k=5

∴k=5/2

Hope so it helps

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