What u think about set history. Is it should be discovered?
Divide eq 2 by 2 u will get 3x+4y+15/2 and the first eq is 3x-4y +5. =0 which are parallel find the distance by the formula c1-c2/[a2+b2]power 1/2
The distance between the lines 3x-4y+5=0 and 6x+8y+15=0 is 1. How?
Yess...without it..there would no probability..permutation or combination