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Topics: Topic 1: Solving Linear Equations Topic 2: Solving Quadratic Equations

Topics: Topic 1: Solving Linear Equations Topic 2: Solving Quadratic Equations Topic 3: Solving Proportions involving linear and quadratic functions. Topic 4: Solving Absolute Value Equations. We want to use this information to solve linear, quadratic, and absolute value equations.

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Topics: Topic 1: Solving Linear Equations Topic 2: Solving Quadratic Equations

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  1. Topics: Topic 1: Solving Linear Equations Topic 2: Solving Quadratic Equations Topic 3: Solving Proportions involving linear and quadratic functions. Topic 4: Solving Absolute Value Equations

  2. We want to use this information to solve linear, quadratic, and absolute value equations. Before you start solving, you should know what type of equation you are working with and the number and type of solutions that are possible. After you finish, you should also be able to check to see if you answer is correct or not! There should be no mystery as to whether you are right!!!

  3. Graph: y = 3x – 4 Graph: y = 5 Solution: (3, 5) 3x – 4 = 5 3x = 9 x = 3 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). When we are solving equations what exactly are we doing? When we are solving equations we are finding the x-value of the intersection of two graphs.

  4. Graph: y = 3(x - 4) + 5 Graph: y = -4 Solution: (1, -4) 3(x – 4) + 5 = -4 3(x – 4) = -9 x – 4 = -3 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). x = 1

  5. Graph: y = 2(x + 2)2 - 8 Graph: y = -6 Solution: (-3, -6) and (-1, -6) 2(x + 2)2 – 8 = -6 2(x + 2)2 = 2 (x + 2)2 = 1 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). x + 2 = 1 x + 2 = -1 x = -1 x = -3

  6. Graph: y = -(x - 3)2 + 8 Graph: y = 8 Solution: (3, 8) -(x - 3)2 + 8 = 8 -(x - 3)2 = 0 (x -3)2 = 0 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). x - 3 = 0 x = 3

  7. Graph: y = x2 + 3 Graph: y = 1 Solution: No Solution x2 + 3 = 1 x2 = -2 No Solution Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y).

  8. Graph: y = ½lx+ 3l - 5 Graph: y = -1 Solution: (5, -1) and (-11, -1) ½lx + 3l - 5 = -1 ½lx + 3l = 4 l x + 3 l = 8 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). x + 3 = 8 x + 3 = -8 x = 5 x = -11

  9. Graph: y = -3l x l + 5 Graph: y = 5 Solution: (0, 5) -3l x l + 5 = 5 -3l x l = 0 l x l = 0 Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y). x = 0

  10. Graph: y = l x + 4 l - 3 Graph: y = -6 Solution: No Solution l x + 4 l - 3 = -6 l x + 4 l = -3 No Solution Solution of a System The place where two (or more) graphs intersect is the solution of the system. The solution is written as an ordered pair (x, y).

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