1.

One equation of a pair of dependent linear equations is –5x + 7y = 2. The second equation can be (a) 10x+14y +4 = 0(b) –10x –14y+ 4 = 0(c) –10x+14y + 4 = 0(d) 10x – 14y = –4

Answer»

Correct answer is: (d) 10x – 14y = –4

-2(–5x + 7y = 2) gives 10x – 14y = –4.

Now a1/a2 = b1/b2 = c1/c2 = -2



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