Question

For what value of a system of linear equation: x+2y+7=0 and 2x+ay+14=0 has infinite many solution

Answer 1

let x+2y+7=0.........(1)
and 2x+ay+14=0.....(2)

for infinite Many solutions......
1/2=2/a=7/14

1/2 = 2/a
a = 2 (2)
a = 4
Therefore, the value of ''a'' is 4