Let's start with a problem that's half done already... We already know what y is:
We just need to figure out what the x is. Substitution! Take the y guy and stick it into the first equation:
|This gives||. Solve for x!|
Let's double-check that:
|So, the solution to our system is||.|
Remember that this is a point where two lines intersect.
Solve by substitution: