For the
two lines to be parallel and giving no solutions,the condition of two lines,
a1x+b1y=c1 and a2x+b2y=c2 is
a1a2=b1b2≠c1c2
Thus for finding a parallel line against the equation 2x+3y=8,we can take any line of the form 2x+3y=n.where ‘n’ can take any real value except 8.