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Question

By comparing the ratios a1a2,b1b2,c1c2, find out whether the pairs of linear equations intersect at a point, are parallel find :
9x+3y+12=018x+6y+24=0

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Solution

We have,

9x + 3y + 12 = 0


18x + 6y – 24 = 0


Here, a1 = 9, b2 = 3, c1 = 12


a1 = 18, b2 = 6, c1 = -24



Both the lines will coincide.


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