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If u=a1x+b1y+c1=0,v=a2x+b2y+c2=0, and (a...

If `u=a_1x+b_1y+c_1=0,v=a_2x+b_2y+c_2=0,` and `(a_1)/(a_2)=(b_1)/(b_2)=(c_1)/(c_2),` then the curve `u+k v=0` is the same straight line `u` different straight line not a straight line none of these

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