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Unit 9B Quadratics Day 4 Take Initiative! Do Now: 1. Take out both packets 2. Complete Warm up Factored Form: Vertex Form: Why is it easy to write in both? Learning Targets roots Unit 9B Quadratics Day 4 Day 4 Schedule 1. Warmup 2. HW Questions 3. OYO's 4. In class problems 5. Worksheet #2 6. Homework: Review Video OYO's 1. x ints: ( ___ , ___ ) & ( ___ , ___ ) vertex: ( ___ , ___ ) Factored Form: Vertex Form: 2. Write an equation of a parabola with x intercepts of 5 and 1. Given the graph goes through (3, 4) 3. Write an equation for the parabola with vertex (3, 8) which also goes through the point (1, 2) Unit 9B Quadratics Day 4 Write equation for parabola with vertex (3, 4) and the point (8, 1). Why Vertex Form??? 1. Write y = a(x )2 + ___ 2. Substitute (8, 1) in for x and y. 3. Solve Standard y = 3x2 2x + 5 Vertex Intercept y = .5(x 7)2 + 2 y = 2(x 5)(x + 5) y = x2 + 3x 5 y = (x + 4)2 2 y = .25(x + 4)(x 3) Unit 9B Quadratics Day 4 Using Intercept form to find the vertex y = 2(x 3)(x + 5) x-intercepts ( ___ , ___ ) & ( ___ , ___ ) y-intercept: ( ___ , ___ ) axis of symmetry: x = ___ Vertex: ( ___ , ___ ) Vertex Form: Check on Graphing Calculator! Using Intercept form to find the vertex y = .5(x 2)(x 6) x-intercepts ( ___ , ___ ) & ( ___ , ___ ) y-intercept: ( ___ , ___ ) axis of symmetry: x = ___ Vertex: ( ___ , ___ ) Vertex Form: Check on Graphing Calculator! Unit 9B Quadratics Day 4 2 y = 2(x - 3) + 5 Form? Opens up or down? Max or Min Vertex: ( ___ , ___ ) Axis of Symmetry: x = ___ y-intercept: ( ___ , ___ ) Sketch!!! Mastery Work: Forms Worksheet #2 1 Together!! Unit 9B Quadratics Day 4 Together!! 4 (4,2) yintercept 1 Homework: Benchmark Review Video Finish Worksheet if not done I can write a graph in factored or vertex form. I can solve for a in a factored or vertex equation.