Math, asked by saharoshan685, 5 hours ago

the value of k for which lines 5 x + 7 Y equal to 3 and 15x + 21 Y equal to K coincide is​

Answers

Answered by gops2k4
3

Answer:

K not equal to 3

Step-by-step explanation:

for a pair of coinciding lines,

a1/a2 = b1/b2 not equal to c1/c2

here,

a1=5    b1=7     c1=3

a2=15  b2=21  c2=K

a1/a2=1/3

b1/2=1/3

which implies,

c1/c2 not equal to 1/3.

Therefore, we get K not equal to 1/3, which means, for any value other that 3, the pair of lines would coincide.

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