Solving Systems using Substitution

Slides:



Advertisements
Similar presentations
Solving Systems Using Substitution or Elimination Circuit #1 Solve each system using substitution or elimination.
Advertisements

2-3C Finding an Equation of a Line 2-3C Finding an Equation of a Line Objectives: To write an equation of a line using the slope-intercept equation.
Solving Equations = 4x – 5(6x – 10) -132 = 4x – 30x = -26x = -26x 7 = x.
4.5 Determinants and Cramer’s Rule. Objectives Evaluate a determinant of a 2 x 2 matrix. Use Cramer’s rule for linear equations.
Solving Systems of three equations with three variables Using substitution or elimination.
Solving Systems of Equations using Substitution HCPS Henrico County Public Schools Designed by Vicki Hiner- Godwin High School.
Notes Over is what percent of 140?
Solving Systems of Equations: Elimination Method.
Chapter 7 – Solving Systems of Linear Equations
Substitute 0 for y. Write original equation. To find the x- intercept, substitute 0 for y and solve for x. SOLUTION Find the x- intercept and the y- intercept.
Substitute 0 for y. Write original equation. To find the x- intercept, substitute 0 for y and solve for x. SOLUTION Find the x- intercept and the y- intercept.
3x – 5y = 11 x = 3y + 1 Do Now. Homework Solutions 2)2x – 2y = – 6 y = – 2x 2x – 2(– 2x) = – 6 2x + 4x = – 6 6x = – 6 x = – 1y = – 2x y = – 2(– 1) y =
Elimination Day 2. When the two equations don’t have an opposite, what do you have to do? 1.
7.3 Solving Systems of Equations by Elimination (Addition & Subtraction) Solve by Elimination Example Problems Practice Problems.
3.5 – Solving Systems of Equations in Three Variables.
Writing equations given a point and the slope of a line
Lesson 2.7 AIM: How to find the slope and equation of a line using two points.
Section 5.3 Solving Systems of Equations Using the Elimination Method There are two methods to solve systems of equations: The Substitution Method The.
Direct Variation 3.6. Direct Variation  Direct Variation is when two variables can be expressed as y=kx where k is a constant and k is not 0.  k is.
Solving Linear Systems by Substitution
9.3 Equations and Absolute Value Goal(s): To solve equations involving absolute value.
SECONDARY ONE 6.1a Using Substitution to Solve a System.
Elimination Method Day 2 Today’s Objective: I can solve a system using elimination.
Substitution Method. Solving systems of equations w/o graphing x+y=6 x=y+2 X Y Inside of the Y container, and inside of the X container are some little.
The Substitution Method Objectives: To solve a system of equations by substituting for a variable.
SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION. #1. SOLVE one equation for the easiest variable a. Isolated variable b. Leading Coefficient of One #2. SUBSTITUTE.
Notes 6.5, Date__________ (Substitution). To solve using Substitution: 1.Solve one equation for one variable (choose the variable with a coefficient of.
3.1 Solving Systems By Graphing Or Substitution. * A system of equations is a collection of equations in the same variable. *A solution to a system is.
 To find the numerical value of the expression, simply substitute the variables in the expression with the given number. Evaluate: 2x + 7, if x = 4 Substitute.
Algebra Review. Systems of Equations Review: Substitution Linear Combination 2 Methods to Solve:
SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION PRACTICE PROBLEMS.
Use Linear Equations in Slope- Intercept Form Lesson 5.2 OBJ: to write an equation of a line using points on the line.
Warm Up 1.) Graph the set of points (-2, 7), (-1, 4), (0, 1), and (1, -2). Which model is most appropriate for the set? (linear or exponential) 2.) Which.
WARM UP What are the solutions of each equation? 1.) x = 4 2.) x = 0 3.) x 2 – 49 = 0.
Copyright 2012 Davitily. Given an X-Y Table, Write an Equation in Slope-Intercept Form Step 1: Find the slope. Step 2: Find the y-intercept. Step 3: Substitute.
Friday, March 27 Today's Objectives
How to Write an Equation of a Line Given TWO points
Algebra Review Systems of Equations page 69
TODAY IN GEOMETRY… Learning Goal: You factor binomials and trinomials.
Solve: 1. 4<
Solving Systems using Substitution
Section 2 – Solving Systems of Equations in Three Variables
Solve a system of linear equation in two variables
Solving Systems of Equations using Substitution
Use power series to solve the differential equation. {image}
Equation Review Given in class 10/4/13.
Opener Perform the indicated operation.
Solving Systems of Equations by Substitution
Solving equations Mrs. Hall.
Solve Linear Equations by Elimination
4.6 Cramer’s Rule System of 2 Equations System of 3 Equations
Solving Systems of Equation by Substitution
Solving One and Two Step Equations
SIMULTANEOUS EQUATIONS 1
Who Wants to be an Equationaire?. Who Wants to be an Equationaire?
7.3 Notes.
5.1 Solving Systems of Equations by Graphing
Use power series to solve the differential equation. y ' = 7xy
Systems of Equations Solve by Graphing.
Warm Up 12/3/2018 Solve by substitution.
Section 8.2 Part 2 Solving Systems by Substitution
Equation Review.
Substituting into formulae
Solving Systems of Equations by Substitution
Chapter 8 Systems of Equations
5.1 Integrals Rita Korsunsky.
Solving a System of Linear Equations
Indicator 16 System of Equations.
Evaluating an expression with two variable
Presentation transcript:

Solving Systems using Substitution 5.2 Solving Systems using Substitution

Evaluate if x = 2 and y = -3 3x + y 5x + 3(x+y) – 2y

Solve for x: 3) 3(x-2) = 6 4) 7 – 3(2 + 5x) = 11

5) Solve the system of equations using substitution: y = 3x x + 2y = -21

6) Solve the system of equations using substitution: x+y = -3 y = 2x +6

7) Solve the system of equations using substitution: -4x + 2y = 6 y = 2x + 3

8) Solve the system of equations: x + 5y = -3 3x – 2y = 8

9) Solve the system of equations: 2x + y = -4 5x + 3y = -6

10) Solve the system of equations: a + b = 1 5a + 3b = -1

11) Solve the system of equations: y = 4x + 2 y= 2x - 8

Unit 5 Assignment #3 p. 263 #8-19all, 32*, 35-37 *EXTRA CREDIT