Chapter 1 p 58 # 41 - Point of Intersection of 2 linear functions. since y = x and y = -x +3, then x = -x +3 So 2x = 3, x = 3/2 and since y = x, then y = 3/2 So points of Intersection is	Graphical Solution is
Chapter 1 p 58 # 42 - Point of Intersection of 2 linear functions. or When y = x + 1, 2x + 3(x + 1) = 12 5x = 9, x = 9/5 = 1.8 For x = 1.8, y = x +1 = 1.8 +1 = 2.8 Poit of Intersection is (1.8, 2.8)