Question 65283
Let P(5,6)=P(x1,y1)

Now we know that the equation for this line is :
y-y1=m(x-x1) where m is the slope.  So we have

y-6=4/3(x-5) or

3y-18=4x-20 and
4x-3y=2

if x=0, then y=-2/3 the coordinates for another point on the line

Hope this helps---Happy holidays----ptaylor