Answer:
 (8, 11)
Step-by-step explanation:
The 2-point form of the equation of a line is useful for the one where only points are given.
 y = (y2 -y1)/(x2 -x1)(x -x1) +y1
 y = (3 -1)/(4 -3)(x -3) +1
 y = 2(x -3) +1
We can equate this to the expression for y in the given equation.
 x +3 = 2(x -3) +1
 x +3 = 2x -5 . . . . . . eliminate parentheses
 8 = x . . . . . . . . . . . . add 5-x
Using the given equation, we can find y:
 y = x +3 = 8 +3
 y = 11
The solution to the system is (x, y) = (8, 11).
