Complete the table of values and graph each of the following quadratic functions (8 marks each) y = 2x2 - 8 with x-values -31 x 1 3 X 1. y =2x -8 (x, y ) y=2x*2-8 10 -3 y =2(-3)'-8=2(-3)(-3)-8= -2 y =2(-2)' -8 = Vertex: ( x, y) = -1 y =2(-1)' -8 = 0 ymin = y =2(0)-8= 10 1 Parabola Opens : y =2(1) -8= 2 y = 2(2) -8= 3 y =2(3) -8= y = 2x -10x + 5 with x-values 05 x$ 5 y=2x*2-10x+5 X y = 2x2 - 10x + 5 ( x, y ) 10 0 Vertex: ( x, y) = 2 ymin = 10 8 6 -4 . 4 6 8 10 3 Parabola Opens : 4 5 Complete the table of values and find the key features of these quadratic functions: 2. y = x2 + 6x + 8 (x, y) 1 st Diff 2nd Diff HOW OO w s in an -2 0 -1 0 Key Features: Vertex: A.O.S: Optimal value: X - intercepts: Y - intercept: 10 -8 -6 -4 -2 2 4 6 8 10 y = x2 - 6x + 5 X y (x,y) 1st Diff 2nd Diff 0 2 3 Key Features: 10 Vertex: A.O.S: Optimal value: X - intercepts: Y - intercept: 8 -6 -4 -2 2 4 6 8 10