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Core Connections Integrated I, 2013
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Core Connections Integrated I, 2013 View details
2. Section 11.2
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Exercise 111 Page 621

Do either of the equations have an isolated variable in it?

Practice makes perfect

In this system of equations, at least one of the variables has a coefficient of Therefore, we will approach its solution with the Substitution Method. When solving a system of equations using substitution, there are three steps.

  1. Isolate a variable in one of the equations.
  2. Substitute the expression for that variable into the other equation and solve.
  3. Substitute the solution into one of the equations and solve for the value of the other variable.
Observing the given equations, it looks like it will be simplest to isolate in the second equation.
Subchapter links expand_more
arrow_right 11.2.1 Solving Work and Mixture Problems p.603-604
47
Solving Work and Mixture Problems 48 (Page 603)
Solving Work and Mixture Problems 49 (Page 603)
Solving Work and Mixture Problems 50 (Page 603)
Solving Work and Mixture Problems 51 (Page 603)
Solving Work and Mixture Problems 52 (Page 604)
Solving Work and Mixture Problems 53 (Page 604)
Solving Work and Mixture Problems 54 (Page 604)
Solving Work and Mixture Problems 55 (Page 604)
arrow_right 11.2.2 Solving Equations and Systems Graphically p.607-608
Solving Equations and Systems Graphically 61 (Page 607)
Solving Equations and Systems Graphically 62 (Page 607)
Solving Equations and Systems Graphically 63 (Page 607)
Solving Equations and Systems Graphically 64 (Page 607)
65
Solving Equations and Systems Graphically 66 (Page 608)
Solving Equations and Systems Graphically 67 (Page 608)
Solving Equations and Systems Graphically 68 (Page 608)
Solving Equations and Systems Graphically 69 (Page 608)
arrow_right 11.2.3 Using a Best-Fit Line to Make a Prediction p.610-614
Using a Best-Fit Line to Make a Prediction 71 (Page 610)
Using a Best-Fit Line to Make a Prediction 72 (Page 610)
Using a Best-Fit Line to Make a Prediction 73 (Page 611)
Using a Best-Fit Line to Make a Prediction 74 (Page 611)
Using a Best-Fit Line to Make a Prediction 75 (Page 611)
Using a Best-Fit Line to Make a Prediction 76 (Page 611)
Using a Best-Fit Line to Make a Prediction 77 (Page 611)
Using a Best-Fit Line to Make a Prediction 78 (Page 612)
Using a Best-Fit Line to Make a Prediction 79 (Page 612)
Using a Best-Fit Line to Make a Prediction 80 (Page 612)
Using a Best-Fit Line to Make a Prediction 81 (Page 612)
Using a Best-Fit Line to Make a Prediction 82 (Page 613)
Using a Best-Fit Line to Make a Prediction 83 (Page 613)
Using a Best-Fit Line to Make a Prediction 84 (Page 613)
Using a Best-Fit Line to Make a Prediction 85 (Page 613)
Using a Best-Fit Line to Make a Prediction 86 (Page 613)
Using a Best-Fit Line to Make a Prediction 87 (Page 614)
Using a Best-Fit Line to Make a Prediction 88 (Page 614)
arrow_right 11.2.4 Treasure Hunt p.616-617
Treasure Hunt 91 (Page 616)
Treasure Hunt 92 (Page 616)
Treasure Hunt 93 (Page 616)
Treasure Hunt 94 (Page 616)
Treasure Hunt 95 (Page 616)
Treasure Hunt 96 (Page 617)
Treasure Hunt 97 (Page 617)
Treasure Hunt 98 (Page 617)
Treasure Hunt 99 (Page 617)
arrow_right 11.2.5 Using Coordinate Geometry and Constructions to Explore Shapes p.620-621
Using Coordinate Geometry and Constructions to Explore Shapes 104 (Page 620)
Using Coordinate Geometry and Constructions to Explore Shapes 105 (Page 620)
Using Coordinate Geometry and Constructions to Explore Shapes 106 (Page 620)
Using Coordinate Geometry and Constructions to Explore Shapes 107 (Page 620)
Using Coordinate Geometry and Constructions to Explore Shapes 108 (Page 620)
Using Coordinate Geometry and Constructions to Explore Shapes 109 (Page 621)
Using Coordinate Geometry and Constructions to Explore Shapes 110 (Page 621)
Using Coordinate Geometry and Constructions to Explore Shapes 111 (Page 621)
Using Coordinate Geometry and Constructions to Explore Shapes 112 (Page 621)
arrow_right 11.2.6 Modeling with Exponential Functions and Linear Inequalities p.625-628
Modeling with Exponential Functions and Linear Inequalities 117 (Page 625)
Modeling with Exponential Functions and Linear Inequalities 118 (Page 625)
Modeling with Exponential Functions and Linear Inequalities 119 (Page 625)
Modeling with Exponential Functions and Linear Inequalities 120 (Page 625)
Modeling with Exponential Functions and Linear Inequalities 121 (Page 626)
Modeling with Exponential Functions and Linear Inequalities 122 (Page 626)
Modeling with Exponential Functions and Linear Inequalities 123 (Page 626)
Modeling with Exponential Functions and Linear Inequalities 124 (Page 626)
Modeling with Exponential Functions and Linear Inequalities 125 (Page 626)
Modeling with Exponential Functions and Linear Inequalities 126 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 127 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 128 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 129 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 130 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 131 (Page 627)
Modeling with Exponential Functions and Linear Inequalities 132 (Page 628)
Modeling with Exponential Functions and Linear Inequalities 133 (Page 628)
Modeling with Exponential Functions and Linear Inequalities 134 (Page 628)