Do the equations 4x + 3y = 5 and 12x + 9y = 15 represent a pair of co-incident
lines? Justify your answer.
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Yes,coincident are those who have infinity solutions,it means A1/A2=b1/b2=C1/C2
where
a1 and A2 are cofficients of x square
b1/b2 are cofficients of x
and C1 and C2 are constant
4/12=1/3
3/9=1/3
5/15=1/3
therefore A1/A2 =b1/b2=C1/C2
therefore ,this quadratic equation represent a pair of coincident
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