You can put this solution on YOUR website! Y=mX+b
This is the line equation where m=slope & b=the Y intercept.
2x + y = -5.
y=-2x-5 this line has a slope=-2 & a Y intercept=-5. (red line)
A parallel line will also have a slopr=-2
Y=-2x+2 is the parallel line with a Y intercept=2. (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -2x -5 and -2x +2).