Hello,Originally Posted byusm_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.

Greetings

EB