find the value of a for which the following pair of linear equations has infinity many solution x-4y-9=0,2x-ay-27=0. ax-by=a2-b2
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1.x-4y-9=0
y=0,
x-4(0)-9=0
x-0-9=0
x=9
2. 2x-ay-27=0
x=9,a=1
2(9)-(1)y=0
18-y=0
y=-18
we need to find ax-by=a2-b2
a(9)-b(-18)=a2-b2
9a+18b=a2-b2
7a=16b
y=0,
x-4(0)-9=0
x-0-9=0
x=9
2. 2x-ay-27=0
x=9,a=1
2(9)-(1)y=0
18-y=0
y=-18
we need to find ax-by=a2-b2
a(9)-b(-18)=a2-b2
9a+18b=a2-b2
7a=16b
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