X-4y=-18 find three points to graph

Easy peasy

sub random points for x and solve for y
or solve for y and sum points for x and get y values

some easy points that work most of the time
sup
x=0
y=0

if x=0
0-4y=-18
4y=18
y=9/2
y=4.5
(0,4.5) is one point

if y=0
x-4(0)=-18
x=-18
(-18,0) is aonther

another is
(-5,2)

3 points are
(0,4.5)
(-18,0)
(-5,2)

When i did the math i got 11 cm