Today we will solve equations with two variables. Solve = figure out.

Slides:

Advertisements

Similar presentations

Solving Equations = 4x – 5(6x – 10) -132 = 4x – 30x = -26x = -26x 7 = x.

Advertisements

Today you will need: A pencil Your math journal A hundred’s chart

Let’s solve the equation: We shall use a scale to represent our equation. The variable x will be replaced with and the numbers will be represented with.

Making an Equation from a Table (Option 2) By: Mrs. Waters.

Bell Ringer Solve for x. 2x – 5 = 35 – 18x. Today’s LEQ: How do you solve a system of equations by substitution? We already know we can solve a system.

THE ELIMINATION METHOD Solving Systems of Three Linear Equations in Three Variables.

3.5 Solving Systems of Equations in Three Variables

Algebra February 10, Systems of Three Variables We have already seen a system of two equations used to solve two variables. Now we are going to.

COMPASS Practice Test 13 Quadratics. This slide presentation will focus on quadratics. Quadratics will always have a variable raised to the second power,

Solve the following equations for x. 5x = 45 4x + 5 = 13

Instructions for lesson delivery This is part 2 for the lessons on linear equations Print out the last page for each students so they can place them in.

Solving Systems of Equations: Elimination Method.

CHAPTER 7-1 SOLVING SYSTEM OF EQUATIONS. WARM UP  Graph the following linear functions:  Y = 2x + 2  Y = 1/2x – 3  Y = -x - 1.

Warm Up Graph the lines on the same grid and identify the point where they meet. 1. y=2x-2 2. y=x+1.

Table of Contents First note this equation has "quadratic form" since the degree of one of the variable terms is twice that of the other. When this occurs,

3.5 – Solving Systems of Equations in Three Variables.

Equations with variables on both sides Sections 3.11.

Warm up Add the following polynomials x + 2y = 10 5y – x = 7 + 4x – 3y = 1 + 9y + 4x = -1.

ALGEBRA LESSON 2 EVALUATING EXPRESSIONS AND CHECKING.

Lesson 2.7 AIM: How to find the slope and equation of a line using two points.

Variables on Both Sides. Visual 5x + 6 = 3x + 12.

Lesson Topic: True and False Number Sentences Lesson Objective: I can…  Explain what the equality and inequality symbols include. They will determine.

TABLES AND VALUES Section 1.5. Open Sentence Equation.

Substitution Method: 1. Solve the following system of equations by substitution. Step 1 is already completed. Step 2:Substitute x+3 into 2 nd equation.

Solving Linear Systems by Substitution O Chapter 7 Section 2.

Bell Ringer October 14, 2010 y = 7 – 2x 4x + y = 5 Step 1: Put the equations in Standard Form. 2x + y = 7 4x + y = 5 Step 2: Determine which variable to.

Solving One-Step Equations Objective: Use inverse operations to solve equations.

3.3 Problem Solving Using Linear Systems ©2001 by R. Villar All Rights Reserved.

Quadratic Relations Solving Quadratic Equations Day 3: Solve by Factoring Tuesday, January 05, 20161Day 2 - Solve by Factoring.

4.8 Polynomial Word Problems. a) Define the variable, b) Write the equation, and c) Solve the problem. 1) The sum of a number and its square is 42. Find.

Today we will solve equations with two variables. Solve = figure out.

OCTOBER 13, 2009 Solving Systems of Equations. Objectives Content Objectives Review the addition/elimination method. Learn the substitution method. Language.

Solving Addition and Subtraction Equations Lesson 6-2 Page 225.

Algebra 7.2 Solving Systems Using Substitution. You have already learned that the solution is the point of intersection of the two graphed lines. Solution.

ONE STEP EQUATIONS Multiplication and Division ONE STEP EQUATIONS Example 1 Solve 3x = 12 Variable? x 3x = 12 x x 3 ÷ 3 Inverse operation? Operation?

Solving Equations By Adding or Subtracting. Key Terms Inverse Operations: –You can use inverse operations to solve equations. –“Undo” each other by performing.

Systems of Equations By Substitution and Elimination.

6-2 SOLVING LINEAR SYSTEMS BY SUBSTITUTION Goal: Use substitution to solve a linear system Eligible Content: A / A

6.5 Solving Exponential Equations SOLVE EXPONENTIAL EQUATIONS WITH THE SAME BASE. SOLVE EXPONENTIAL EQUATIONS WITH UNLIKE BASES.

Get your folder We are starting a new unit today If 2 is a couple and 3 is a crowd, what is 4 and 5? 9.

Solving Systems by Substitution (isolated) Solving Systems by Substitution (not isolated)

Today we will solve equations with two variables. Solve = figure out.

Solving Addition and Subtraction Equations An equation is a mathematical sentence that contains an equal sign.

1)Glue Standards for Unit 4 onto page 91 2) Page 93 Make the following table on the WHOLE sheet of paper :

Daily Vocabulary Coefficient matrix Matrix of constants.

Solving Literal Equations

Warm Up 1/14 Balanced or not? = =

MAT 117 Functions & Equations 1.3. To solve an equation: Locate the variable that you want to isolate. Use inverse operations (opposite operation) to.

6-2 Solving Systems By Using Substitution

Warm-Up Solve the system by substitution..

Solving Linear Systems by Linear Combinations

Equations as Relations

2 Understanding Variables and Solving Equations.

Write Polynomial Functions and Models

6-2 Solving Linear Systems by substitution

Write Equations of Lines

Y-axis A Quadrant 2 Quadrant I (4,2) 2 up

Solving Equations with Variables on Both Sides

Solving Equations with Variables on Both Sides

Objective The student will be able to:

Warm-Up Solve the system by graphing..

TWO STEP EQUATIONS 1. SOLVE FOR X 2. DO THE ADDITION STEP FIRST

Objective The student will be able to:

Solving Algebraic Equations with Addition and Subtraction

Y-axis A Quadrant 2 Quadrant I (4,2) 2 up

Solving Algebraic Equations with Addition and Subtraction

6-3 & 6-4 Solving Systems by Elimination

Solving By Substitution

Equations With Two Variables pages

X ⦁ X = 64 ±8 ±14 X ⦁ X ⦁ X =

Presentation transcript:

Today we will solve equations with two variables. Solve = figure out

Equation – Number sentence that you have to solve (balance) using variables. 5 + x = y + 7 7x – 1 = y z = 5y - 4

Steps for Solving an Equation 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check

Let’s do one together 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check + 4 If = 7, what is ? = = + 4 = = 11

Here’s another 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check + 4 If = 2, what is ? = = + 4 = = 6

One More 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check + 4 If = 14, what is ? = = + 4 = = 14

Let’s try one with letter variables n = x – 3. If x = 4, what is n? 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check n = x - 3 n = n = 1 1 = 4 – 3 ? 1 = 1 !!!!!

Let’s try another z = 4 + y. If y = 2, what is z? 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check z = 4 + y Z = z = 6 6 = ? 6 = 6 !!!!!

Let’s try one with letter variables 2x - 1 = y. If x = 3, what is y? 1. Write down your equation. 2. Plug in the given variable. 3. Solve. 4. Check 2x - 1 = y 2 x = y 5 = y 2 x = 5 ? 5 = 5 !!!!!

Complete the Table xy 13 2? 3? Y = 2x + 1 a.4 and 5 b.4 and 6 c.5 and 6 d.5 and 7

What did you learn today? What is a variable? What is an equation? Solve this equation: a = 6b – 1. If b = 3, what is a? a = 6b – 1. If b = 3, what is a? a. 18 a. 18 b. 19 b. 19 c. 8 c. 8 d. 17 d. 17

Print slides for homework

Complete the Table xy Y = 3x + 1

Complete the Table xy Y = x + 17

Complete the Table xy Y = 2x + 3

Complete the Table xy Y = 5x