Hello,Originally Posted by usm_67
to graphing: I've attached a drawing. The coordinates of the intersection is the solution you're looking for.
to using algebra: There are at least 4 to 5 different method to get a solution:
Both values of y must be equal:
and that means: x = 3
Put x = 3 in one the equations:
So you get the intersection at (3,2)
to formal check: Put x=3 and y=2 in your original equations:
you'll get 3=3 and that's true.
You'll get: 12 + 6 -18=0 and that's true.