• f1:=-1.5*x+3=y

• f2:=1.5*x+3=y

• f3:=2.25=y

• f4:=(x-2)^2+y^2=1

• f5:=(x+2)^2+y^2=1

• f6:=(x-0.5)^2+2.25=y

• f7:=0.5*x^3+1.25*x^2+1.5=y

• f8:=0.5*x+3=y

• plot(
  plot::implicit(f1,x=0.5..2,y=-2..4),
  plot::implicit(f2,x=-2..-0.5,y=-2..4),
  plot::implicit(f3,x=-0.5..0.5,y=-2..4),
  plot::implicit(f4,x=-4..4,y=-2..4),
  plot::implicit(f5,x=-4..4,y=-2..4),
  plot::implicit(f6,x=0.5..3,y=-2..4.5),
  plot::implicit(f7,x=-2..-0.5,y=-2..4),
  plot::implicit(f8,x=0.75..2.5,y=-2..5),
  Scaling=Constrained,
  Ticks=7
  )