find the equation of the straight line passing through `(2,1)` and bisecting the portion of the straight line `3x-5y=15` lying between the axes.

Find the equation of the straight line passing through the origin and bisecting the portion of the line a x+b y+c=0 intercepted between the coordinate axes.

Find the equation of the straight line passing through the origin and bisecting the portion of the line ax+by+c=0 intercepted between of the coordinate axes.

Find the equations of the straight lines which go through the origin and trisect the portion of the straight line 3x+y=12 which is intercepted between the axes of coordinates.

Find the equations of the straight lines which pass through the origin and trisect the portion of the straight line 2x+3y=6 which is intercepted between the axes.

Find the equations of the straight lines which pass through the origin and trisect the portion of the straight line 2x+3y=6 which is intercepted between the axes.

Find the equations the straight lines which go through the origin and trisect the portion of the straight line 3x+y=12 which is intercepted beteen the axes of coordinates.

Find the equation of the line passing through the origin and which bisects the portion of the line 3x+y=6 intercepeted between the co-ordinate axes.

Find the equation of a line which passes through the point (3,1) and bisects the portion of the line 3x+4y=12 intercepted between coordinate axes.

Find the equation of the straight line which passes through the point (-1,0) and is parallel to the straight line y=2x+3.