Graphing absolute value functions and transformations

Slides:



Advertisements
Similar presentations
If the leading coefficient of a quadratic equation is positive, then the graph opens upward. axis of symmetry f(x) = ax2 + bx + c Positive #
Advertisements

THE GRAPH OF A QUADRATIC FUNCTION
Function Families Lesson 1-5.
~ Chapter 6 ~ Algebra I Algebra I Solving Equations
Equations of lines.
Warm Up Section 3.3 (1). Solve:  2x – 3  = 12 (2). Solve and graph:  3x + 1  ≤ 7 (3). Solve and graph:  2 – x  > 9 (4). {(0, 3), (1, -4), (5, 6),
2.8 Absolute Value Functions p Absolute Value is defined by:
Absolute Value is defined by: The graph of this piecewise function consists of 2 rays, is V-shaped and opens up. To the left of x=0 the line is y = -x.
13.2 Solving Quadratic Equations by Graphing CORD Math Mrs. Spitz Spring 2007.
Create a table and Graph:. Reflect: Continued x-intercept: y-intercept: Asymptotes: xy -31/3 -21/2 1 -1/22 xy 1/ /2 3-1/3.
Graphing Quadratic Functions
And the Quadratic Equation……
Section 8.3 Absolute Value Functions. 8.3 Lecture Guide: Absolute Value Functions Objective 1: Sketch the graph of an absolute value function.
3.2 Graphing Functions and Relations
Graphing Linear Equations
What is the slope of a line parallel to the line seen below? m= -1/3
2.7: Absolute Value Functions and Graphs
IA Functions, Equations, and Graphs Chapter 2. In this chapter, you will learn: What a function is. Review domain and range. Linear equations. Slope.
Apply rules for transformations by graphing absolute value functions.
X-intercept(s): y-intercept: Domain: Axis of Symmetry: Zero(s): Range: What are the Characteristics of Quadratic Functions?? MM2A3c. Investigate and explain.
Graphs of Quadratic Functions
2.8 : Absolute Value Functions What is absolute value? What does the graph of an absolute value function look like? How do you translate an absolute value.
Graph Absolute Value Functions using Transformations
Standard MM2A1. Students will investigate step and piecewise functions, including greatest integer and absolute value functions. b. Investigate and explain.
Algebra II Piecewise Functions Edited by Mrs. Harlow.
Warm Up Given the function y = x2, copy and complete the table below for the values of this function. Then sketch these points on a coordinate plane.
Unit 1B quadratics Day 3. Graphing a Quadratic Function EQ: How do we graph a quadratic function that is in vertex form? M2 Unit 1B: Day 3 Lesson 3.1B.
6-5B Graphing Absolute Value Equations Algebra 1 Glencoe McGraw-HillLinda Stamper.
Y-intercept: the point where the graph crosses the y-axis, the value of x must = 0. find by graphing or plugging in 0 for x and solving.
Chapter 4 Quadratic Functions and Various Nonlinear Topics Section 4.2
7.1 R eview of Graphs and Slopes of Lines Standard form of a linear equation: The graph of any linear equation in two variables is a straight line. Note:
Copyright © Cengage Learning. All rights reserved. 4 Quadratic Functions.
Henley Task teaches horizontal transformations Protein Bar Toss Part 1 teaches factoring if a ≠ 1 Section 3.4 for a = 1 Section 3.5 for a ≠ 1 Protein Bar.
Analyzing Graphs of Quadratic and Polynomial Functions
(409)539-MATH THE MATH ACADEMY (409)539-MATH.
To find the x coordinate of the vertex, use the equation Then substitute the value of x back into the equation of the parabola and solve for y. You are.
Graphing Exponential Functions Explain how to tell if an exponential function is growth or decay, and what an exponential growth and decay graph looks.
Basic Properties of Functions. Things I need you to know about functions How to do basic substitution and recognize points How to graph a function. Sometimes.
DOMAIN, RANGE, AND INTERCEPTS NOTES: 9/8. DOMAIN The set of all input values of a function.  x RANGE The set of all output values of a function.  f(x)
Characteristics of Polynomials: Domain, Range, & Intercepts
Graphs of Quadratic Functions Graph the function. Compare the graph with the graph of Example 1.
LINEAR EQUATIONS & THEIR GRAPHS CHAPTER 6. INTRODUCTION We will explore in more detail rates of change and look at how the slope of a line relates to.
Math 20-1 Chapter 3 Quadratic Functions
2.8 Absolute Value Functions Goals:1. Representing absolute value functions 2. Using absolute value functions in real life Given how do you find the vertex,
How do I graph and write absolute value functions?
Ch 2 Quarter TEST Review RELATION A correspondence between 2 sets …say you have a set x and a set y, then… x corresponds to y y depends on x x is the.
For the function below, find the direction of opening, the equation for the axis of symmetry, and the y-intercept. Use this information to sketch the.
MM2A1. Students will investigate step and piecewise functions, including greatest integer and absolute value functions. b. Investigate and explain characteristics.
 Given the function y = x 2, copy and complete the table below for the values of this function. Then sketch these points on a coordinate plane. WARM UP.
Do Now: Solve the equation in the complex number system.
Unit 1B quadratics Day 4. Graphing a Quadratic Function M2 Unit 1B: Day 4 Lesson 3.1B EQ: How do we graph a quadratic function and identify all of its.
Warm Up for Lesson 3.5 1)Solve: x 2 – 8x – 20 = 0 2) Sketch the graph of the equation y = 2x – 4.
5.8 Graphing Absolute Value Functions I can graph an absolute value function and translate the graph of an absolute value function.
Do Now: Solve the equation in the complex number system.
Unit 10 – Quadratic Functions Topic: Characteristics of Quadratic Functions.
Quadratic Functions Sections Quadratic Functions: 8.1 A quadratic function is a function that can be written in standard form: y = ax 2 + bx.
UNIT 5 REVIEW. “MUST HAVE" NOTES!!!. You can also graph quadratic functions by applying transformations to the parent function f(x) = x 2. Transforming.
Bellwork 1.Solve the inequality and Graph the solution 2.Write a standard form of equation of the line desired Through ( 3, 4), perpendicular to y = -
Unit 2 – Quadratic Functions & Equations. A quadratic function can be written in the form f(x) = ax 2 + bx + c where a, b, and c are real numbers and.
Graphing Quadratic Functions
Graphing Linear/Quadratic Equations
Graphing Absolute Value Functions
2-7 Absolute Value Functions and Graphs
Use Absolute Value Functions and Transformations
Absolute Value is defined by:
y x Lesson 3.7 Objective: Graphing Absolute Value Functions.
Graphing Absolute Value Functions
Analysis of Absolute Value Functions Date:______________________
Quadratic Equation Day 4
Section 8.1 “Graph y = ax²”.
Presentation transcript:

Graphing absolute value functions and transformations Math 2: Unit 5B Day 2 Graphing absolute value functions and transformations

Absolute Value Parent Function

Transformations and translations of the parent function The graph has vertex (h,k) and is symmetric in the line x = h h shifts the parent function horizontally (remember to change the sign) k shifts the parent function vertically The graph is V-shaped. It opens up if a > 0 and down if a < 0. The graph is wider than the graph of if < 1 and narrower if >1.

Transformations and translations of the parent function

Identify the vertex, tell whether the graph opens up or down, then tell whether the graph is wider or narrow or normal compared to Vertex (-3,-5), opens up, Narrower. Vertex (0,-5), opens up, Wider.

Identify the vertex, tell whether the graph opens up or down, then tell whether the graph is wider or narrow or normal compared to Vertex (5,-2), opens down, Narrower. Vertex (½,4), opens up, Normal or the same. Vertex (5,0), opens down, Normal or the same.

Intercepts To find the x-intercept(s): substitute in 0 for y To find the y-intercept: substitute in 0 for x From a graph, the intercepts are where the graph crosses each axis. No x-intercepts! y-intercept (0,-2)

Domain and Range Domain (x-values): read from left to right Range (y-values): read from bottom to top Find the domain and range of this function. Domain: all real numbers Range: y ≥ 2.

Domain and Range Domain (x-values): read from left to right Range (y-values): read from bottom to top Find the domain and range of this function. Domain: all real numbers Range: y ≥ - 4 .

Domain and Range Domain (x-values): read from left to right Range (y-values): read from bottom to top Find the domain and range of this function. Domain: all real numbers Range: y ≤ - 1 .

Zeros The values of x when f(x) = 0 To find the zeros of any function: plug in y = 0 and solve for x. Find the zero(s) of x = -1 and x = 3 .

Intervals of increasing and decreasing Find the intervals where this function is increasing and decreasing. Decreases: Increases: Decreases: (-∞, -3) Increases: (-3,∞)

Intervals of increasing and decreasing Find the intervals where this function is increasing and decreasing. Decreases: Increases: Decreases: (-∞, 2) Increases: (2,∞)

Intervals of increasing and decreasing Find the intervals where this function is increasing and decreasing. Decreases: Increases: Increases: (-∞, -2) Decreases: (-2,∞)

Graphing To graph an absolute value function Find the vertex and sketch the AOS Use a table of values choosing 2 x-values on each side of the vertex plot the points and draw the graph

Graphing Vertex: Max/min? Axis of symmetry: Domain: Range: Y-intercept: Zeros: Intervals of increase and decrease ( - 2, - 1) minimum x = - 2 all real numbers y ≥ - 1 . ( 0, 1) ( -3, 0) and ( -1, 0) Decreases: (-∞, -2) Increases: (-2,∞)

Graph the following: Vertex: Max/min? AOS: Domain: Range: Intercepts: Zeros: Intervals of increase and decrease x y

Graph the following: Vertex: AOS: Domain: Range: Intercepts: Zeros: Intervals of increase and decrease x y

Graph the following: Vertex: Max/min? AOS: Domain: Range: Intercepts: Zeros: Intervals of increase and decrease x y

Slope is the average rate of change! Calculating average rate of change Do you remember how to find slope when given 2 points? If you know any two points on a line, or two solutions of a linear equation, you can find the slope of the line without graphing. Slope is the average rate of change! 20

On the following graph, where is the rate of change positive On the following graph, where is the rate of change positive? Where is it negative? Tell about the interval:

On the following graph, where is the rate of change positive On the following graph, where is the rate of change positive? Where is it negative? Tell about the interval:

Assignment: Handout