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**Do Now 4/12/10 Copy HW in your planner.**

Text p. 632, #3-5, 12 – 32 multiples of 4, #40 In your notebook, define the word LINEAR in your own words. Then explain how to graph a linear equation/function.

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**Chapter 10 “Quadratic Equations and Functions”**

(10.1) Graph y = ax² + c (10.2) Graph y = ax² + bx + c (10.3) Solve Quadratic Equations by Graphing (10.4) Use Square Roots to Solve Quadratic Equations (10.6) Solve Quadratic Equations by the Quadratic Formula

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Objective SWBAT graph y = ax² + c

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**Section 10.1 “Graph y = ax² + c”**

Quadratic Function A nonlinear function that can be written in the standard form y = ax² + bx + c where a = 0. The graph of a quadratic function is in the form of a U-shape and called a parabola.

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**Graphing: y = ax² + c y = x² y-axis x-axis Vertex- Axis of Symmetry-**

“Parent Quadratic Function” x y 1 1 2 4 3 9 -1 1 -2 4 x-axis -3 9 Vertex- the lowest or highest point of the parabola Axis of Symmetry- the line that divides a parabola into 2 symmetric parts

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**Graphing: y = ax² + c y = 3x² x-axis y-axis x y 1 3 2 12 -1 3 -2 12**

“Parent Quadratic Function” y = x² x y 1 3 2 12 -1 3 -2 12 How does y = 3x² differ from the parent function y = x²? x-axis y-axis

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**Graphing: y = ax² + c x-axis y-axis y = 3x² y = 3x²– 3 x y x y -3 1 3**

“Parent Quadratic Function” y = x² y = 3x² y = 3x²– 3 x y x y -3 1 3 1 2 12 2 9 -1 3 -1 -2 12 -2 9 x-axis y-axis

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**Graphing: y = ax² + c y = -1/4x² x-axis y-axis x y 1 -1/4 2 -1 4 -4 6**

“Parent Quadratic Function” y = x² y = -1/4x² x y x-axis 1 -1/4 2 -1 4 -4 6 -9 -1 -1/4 -2 -1 -4 -4 y-axis -6 -9 y = -1/4x²

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Key Concept Open your textbook to page Copy the “Key Concept” box into your notes.

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**Cumulative Test Chapters 1-9**

Homework Text p. 632, #3-5, 12 – 32 multiples of 4, #40

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**NJASK7 Preview April 27th – April 30th - Tuesday to Friday**

Language Arts – Tuesday, April 28th: 105 minutes Wednesday, April 29th: 110 – 130 minutes Mathematics – Thursday, April 30th: 50 minutes Friday, May 1st: 70 minutes

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**NJASK7 Mathematics 3 types of questions (1) Multiple Choice**

(2) Short Constructed Response (no partial credit) (3) Open-Ended (partial credit given) Scored 3, 2, 1, 0.

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