Question 90632
Start at the origin (where the the x and y axis intersect)


Now move your pencil 4 units to the left

We move 4 units in this direction since the x-coordinate is -4 (its the first number of the pair)




{{{drawing(500,500,-6,6,-6,6,
grid(1),
blue(arc(-0.5,0,1,2,0,180)),
blue(arc(-1.5,0,1,2,0,180)),
blue(arc(-2.5,0,1,2,0,180)),
blue(arc(-3.5,0,1,2,0,180))
)}}}


Now go 3 units up

We move 3 units in this direction since the y-coordinate is 3 (its the second number of the pair)



{{{drawing(500,500,-6,6,-6,6,
grid(1),
blue(arc(-0.5,0,1,2,0,180)),
blue(arc(-1.5,0,1,2,0,180)),
blue(arc(-2.5,0,1,2,0,180)),
blue(arc(-3.5,0,1,2,0,180)),
green(arc(-4,0.5,1,1,90,270)),
green(arc(-4,1.5,1,1,90,270)),
green(arc(-4,2.5,1,1,90,270))
)}}}


Plot a point where the pencil lands


{{{drawing(500,500,-6,6,-6,6,
grid(1),
circle(-4,3,0.08),
circle(-4,3,0.10),
blue(arc(-0.5,0,1,2,0,180)),
blue(arc(-1.5,0,1,2,0,180)),
blue(arc(-2.5,0,1,2,0,180)),
blue(arc(-3.5,0,1,2,0,180)),
green(arc(-4,0.5,1,1,90,270)),
green(arc(-4,1.5,1,1,90,270)),
green(arc(-4,2.5,1,1,90,270))
)}}}


So here is the point (-4,3)


{{{drawing(500,500,-6,6,-6,6,
grid(1),
circle(-4,3,0.08),
circle(-4,3,0.10)
)}}}