Without drawing the graph, find out whether the lines representing the following pair of linear equation intersect at a point, are parallel or coincide : 9x-10y=21 & 3/2x-5/3 =7/2.
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Answer:
Eq 1 :9x-10y-21=0Eq 2 : 3/2x -5/2y -7/2=0 =3/2x×6-5/2y×6-7/2×6=0 =3x×3-5y×2-7×3=0
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Step-by-step explanation:
a1/a2 = 9/9 = 1
b1/b2 = 10/10 = 1
c1/c2 = 21/21 = 1
It means a1/a2 = b1/b2 = c1/c2
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