First solve each equation for y, then plug in some x values to get y.
6x-4y=-24; isolate y: -4y=-6x-24; then divide by -4; y=3/2x +6. Points for (x,y) could be (-2,3) (0,6) (2,9).
4x-8y= -32; isolate y; -8y=-4x-32; then divide by -8; y= 1/2x +4. Points for (x,y) could be (-2,3) (0,4) (2,5)
