Answer:
value of x is for values that are excludedor or left out
Answer:

Step-by-step explanation:

Hope this helps.
Answer:
(1,2)
Step-by-step explanation:
the st. lines 3x+4y=5 and 4x-3y=15 interrect at a point A(3, -1. On these linepoints B and C are chosen so that AB= AC. find the posible eqns of the lineBC pathrough the point
They created ratios so people could get information.