Originally posted by clandarkfire
I have a question on my homework that I have no idea how to solve. Speedy help would be appreciated.
Where do the lines Y=ax+b and Y=cx+d cross, assuming that a, b, c, and d are integers and a is not equal to c?
look......make sure you think about this.
the place where the lines intersect (cross) is where the above functions of the variable "x" are equal
so for the "x" coordinate of the point of intersection solve the following equation for "x"
just treat the letters as numbers ( because that is what they represent )
your first step is to group like terms ( ie get all the terms involed with "x" one side, and then group the constants b and d on the other.
then factor out the "x" and get it alone by division.
now you have the solution for the x coordinate in a general form.
hope this helps...