Solving Quadratic Equations

Slides:



Advertisements
Similar presentations
Finding the Intercepts of a Line
Advertisements

Graphs of Equations Finding intercepts of a graph Graphically and Algebraically.
If b2 = a, then b is a square root of a.
Find the x-intercept To find the y-intercept, we must use 0 for x. Substitute x = 0 into 2x + 3y = 6 and solve for y: 2x + 3y = 6 2(0) + 3y = y.
Day 5 Simplify each expression: Solving Quadratic Equations I can solve quadratic equations by graphing. I can solve quadratic equations by using.
Solving Quadratic Equations Tammy Wallace Varina High.
Roots & Zeros of Polynomials I How the roots, solutions, zeros, x-intercepts and factors of a polynomial function are related.
10-3: Solving Quadratic Equations
Solving Quadratic Equations by the Quadratic Formula
Objectives: To solve quadratic equations using the Quadratic Formula. To determine the number of solutions by using the discriminant.
1. Determine if f(x) has a minimum or maximum 2. Find the y-intercept of f(x) 3. Find the equation of the axis of symmetry of f(x) 4. Find the vertex of.
Using the factoring method, what are the solutions of y = x 2 + 5x + 6.
Factoring Finding factors given a Graph Medina1. Finding factors given a Graph *Note: If the function only has one x-intercept, there is not two different.
Solving Quadratic Equations by Factoring. Solution by factoring Example 1 Find the roots of each quadratic by factoring. factoring a) x² − 3x + 2 b) x².
Objective - To use the discriminant to determine the number of real solutions for a quadratic. Quadratic FormulaDiscriminant Used to find the roots of.
CA STANDARDS 20.0: Students use the quadratic formula to find the roots of a second-degree polynomial and to solve quadratic equations. Agenda 1.) Lesson.
Solving quadratic equations by graphing. X Y I x² - 2x = 3 You have to rewrite the equation to find the vertex before you can graph this function Use.
Chapter 10.7 Notes: Solve Quadratic Equations by the Quadratic Formula Goal: You will solve quadratic equations by using the Quadratic Formula.
Solving Quadratic Equations by Graphing Quadratic Equation y = ax 2 + bx + c ax 2 is the quadratic term. bx is the linear term. c is the constant term.
Learning Task/Big Idea: Students will learn how to find roots(x-intercepts) of a quadratic function and use the roots to graph the parabola.
1) What does x have to be for 3x = 0? 1) What does x have to be for 3(x -2) = 0 2) What does x have to be for (x–2) (x+3) = 0.
Discriminant Recall the quadratic formula: x = -b ±√ b2 - 4ac 2a.
Solving Quadratic Equations
Section 4.7 – The Quadratic Formula Students will be able to: To solve equations using the Quadratic Formula To determine the number of solutions by using.
The Quadratic Formula & Discriminant Essential question – How do you solve a quadratic equation using the Quadratic Formula?
Solving Quadratic Equations by Graphing!. Quadratic functions vs. Quadratic equations Quadratic fxns are written in the following form f(x) = ax² + bx.
6-2 Solving Quadratic Equations by Graphing
To add fractions, you need a common denominator. Remember!
Get out your notebooks! You will be able to solve quadratic equations by graphing. You will be able to estimate solutions of quadratic equations by graphing.
Roots, Zeroes, and Solutions For Quadratics Day 2.
Solving Quadratic Equations by Graphing 4 Lesson 10.2.
Solving Quadratic Equations
Bell Work Solve the Equation by Factoring or using Square Roots: Solve the equation by using the quadratic formula: 3. Identify the parts of a parabola:
11-2 Solving Quadratic Equations By Graphing
Section 5-4(e) Solving quadratic equations by factoring and graphing.
SOLVING QUADRATIC EQUATIONS Factoring Method. Warm Up Factor the following. 1. x 2 – 4x – x 2 + 2x – x 2 -28x + 48.
Graphs of Quadratic Functions Graph the function. Compare the graph with the graph of Example 1.
Warmup  1.) 4x 2 = 202.) 3x = 29  3.)4.)  5.)6.)
2.1 – Linear and Quadratic Equations Linear Equations.
6-2 Solving Quadratic Equations by Graphing Objectives: Students will be able to 1)Solve quadratic equations by graphing 2)Estimate solutions of quadratic.
Notes Over 5.6 Quadratic Formula
Quadratic Formula. Solve x 2 + 3x – 4 = 0 This quadratic happens to factor: x 2 + 3x – 4 = (x + 4)(x – 1) = 0 This quadratic happens to factor: x 2.
Warm Up 1.) What is the graph of the function y = -x 2 + 4x + 1?
Section )by graphing (using the calculator to identify the roots (x-intercepts)) 2)by factoring 3)by “completing the square” 4)by Quadratic Formula:
Solving Quadratic Equation by Graphing Students will be able to graph quadratic functions.
Notes Over 9.4 Checking a Solution Using a Graph The solution, or roots of an equation are the x-intercepts. Solve the equation algebraically. Check the.
Math 20-1 Chapter 4 Quadratic Equations
Skill Check Factor each polynomial completely.. 5-1: Solving Quadratic Equations by Factoring By Mr. Smith.
Solving Quadratic Equation by Graphing
Find the number of real solutions for x2 +8x
Solving Quadratic Equation and Graphing
A quadratic equation is written in the Standard Form,
Solving Quadratic Equations by Graphing
Solving Quadratic Equation by Graphing
9.3 Solving Quadratic Equations
SECTION 9-3 : SOLVING QUADRATIC EQUATIONS
Solving a Quadratic Equation by Graphing
Unit 7 Day 4 the Quadratic Formula.
Solving Quadratic Equations
Zeros to Quadratic Functions
Solving Quadratic Equation by Graphing
Solving Quadratic Equations by Factoring
Solving Quadratic Equation by Graphing
Section 9.5 Day 1 Solving Quadratic Equations by using the Quadratic Formula Algebra 1.
Solving Quadratic Equation by Graphing
Graphing Quadratic Equations
Solving Quadratic Equation
Warm Up Find the following: Vertex A.O.S. Y-intercept X-intercept.
Solving Special Cases.
Dispatch  .
Presentation transcript:

Solving Quadratic Equations Components of Quadratic Functions Medina

Graph of a Quadratic Function The solution(s) or roots of quadratic equations are the x-intercepts of the quadratic function. y = -x² + 4x -3 ( 3 , 0 ) ( 1 ,0 ) x = 3 & 1

Graph of a Quadratic Function The solution(s) or roots of quadratic equations are the x-intercepts of the quadratic function. y = 3x² -18x ( 0 , 0 ) ( 6 ,0 ) x = 0 & 6

Graph of a Quadratic Function *Note: If the function only has one x-intercept therefore there is only one solution. y = x²+10x+25 ( 0 , -5 ) x = -5

Graph of a Quadratic Function *Note: If the function only has one x-intercept therefore there is only one solution. y =-4x²+16x-16 ( 0 , 2) x = 2

Graph of a Quadratic Function *Note: If the function has no x-intercept(s) than there is no real solution not zero because zero means the graph crosses at zero. y = x²+6x+10 x = No Real Solution