Question 715435
Is there a point that lies on all three equations? What is it? 
y=-x+9
y=4x 
y=(2)/(5)x
--------------
Find the intersection of the 1st 2 eqns.
y=-x+9
y=4x
4x = x-9
x = -3, y = -12
----------------
y = (2/5)x does not.
y = 2/(5x) does not.