Q1. Verify the consistency or inconsistency of the pair of linear equations x – y + 2 = 0 and 4x – y – 4 = 0 graphically.
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Answer:
a1=1
a2=4
b1=-1
b2=-1
c1=2
c2=-4
a1/a2=1/4
b1/b2=1
since a1/a2 is not equal to b1/b2
they are interscting lines
sooo they are consistence
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