Green line:
we have that
Its a vertical line (parallel to the y-axis)
the equation is
x=-1
yellow line:
Its a vertical line (parallel to the y-axis)
the equation is
x=6
red line:
Its a horizontal line (parallel to the x-axis)
the equation is
y=4
blue line:
Its a horizontal line (parallel to the x-axis)
the equation is
y=-2
