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21. Find the number of solutions of the pair of equations 6x - 3y + 10 = 0 and 2x - y + 9 = 0 |
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Answer» Step-by-step explanation: the LINEAR the linear EQUATIONS are 6 x-3 Y + 10 =0 2x-y+9=0 6x-3y=-10 2x-y=-9 here, a1=6, b1=-3, c=-10 a2=2, b2=-1, c2=-9 a1/a2 = 6/2=3 b1/b2 =-3/-1 =3 c1/c2= -10/-9=10/9 a1/a2+ b1/b2≠c1/c2 hence,PROVED |
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