Question 801834
<pre>
Plot the point (3,0):

{{{drawing(400,400,-3,9,-6,6, graph(400,400,-3,9,-6,6),
locate(3,.5,"(3,0)"),
circle(3,0,.1)  )}}}

Now look at the slope.  {{{-2/3}}}.

The numerator is 2.  It is a negative fraction. So we draw
a line 2 units long downward from that point (3,0).
(Downward because the fraction is negative. It is upward when
the slope fraction is positive)

That's the green line below:

{{{drawing(400,400,-3,9,-6,6, graph(400,400,-3,9,-6,6),
locate(3,.5,"(3,0)"), green(line(3,0,3,-2))),
circle(3,0,.1)  )}}}


Now we look back at the slope.  {{{-2/3}}}.

The denominator is 3. So we draw a line 3 units long to the right
from the end of that green line that.
(We ALWAYS draw the denominator number to the RIGHT!)

That's the other green line below:


{{{drawing(400,400,-3,9,-6,6, graph(400,400,-3,9,-6,6),
locate(3,.5,"(3,0)"), green(line(3,0,3,-2),line(3,-2,6,-2)),
circle(3,0,.1)  )}}}

Now we take a ruler and draw a line through (3,0) and the end of the
second green line, like this  


{{{drawing(400,400,-3,9,-6,6, graph(400,400,-3,9,-6,6),
locate(3,.5,"(3,0)"), green(line(3,0,3,-2),line(3,-2,6,-2)),
circle(3,0,.1),line(-21,16,15,-8)  )}}}

----------------
Note: on some problems, the slope is not a fraction but a whole number.
In that case, just put a 1 under the whole number and it will be a
fraction.  For instance 5 is the fraction {{{5/1}}}.

Edwin</pre>