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WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n)

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Presentation on theme: "WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n)"— Presentation transcript:

1 WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 4

2 WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 3

3 WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 2

4 WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 1

5 EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = -2 3.-5(-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 WARM UP 0

6 GOAL Use the quadratic formula to solve a quadratic equation. KEY WORDS Quadratic formula Vertical Motion model 9.6 Solving Quadratic Equations by the Quadratic Formula

7 The quadratic formula gives the solutions of ax 2 + bx + c = 0 in terms of the coefficients a, b and c. 9.6 Solving Quadratic Equations by the Quadratic Formula

8 THE QUADRATIC FORMULA 9.6 Solving Quadratic Equations by the Quadratic Formula

9

10 Checkpoint Use the Quadratic Formula. Use the quadratic formula to solve the equation. 1.x 2 – 4x + 3 = 0 2.2x 2 + x - 10 = 0 3.-x 2 + 3x + 4 = 0 9.6 Solving Quadratic Equations by the Quadratic Formula

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