1. The problem statement, all variables and given/known data On shifting the origin to a point P, the axes remaining parallel to the old axes,the equation ax+by+c=0 is transferred to ax+by+c+k=0.Show that the locus of P is the straight line ax+by=k. 2. Relevant equation 1. ax+by+c=0 2. ax'+by'+c+k=0 3. The attempt at a solution In the first equation ax+by+c=0 i put x=x'+h and y=y'+k'and then i subtract first and second equation but only one equation is obtained now I don't know how to find the value of h and k'.