Bygraphing february132013 examples ex1solvebygraphing

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Unformatted text preview: parabola. ­­­Zeros and Roots are basically the same thing!­­­ Three Types of Roots 1) One Solution (aka Double Root) 2) No Solution 3) Two Solutions Algebra II 2 Chp. 5.2 ­ Solving Quadratic Eqs. by Graphing February 13, 2013 Examples: Ex. 1 ­ Solve by graphing. 10 a) x2 + 6x + 8 = 0 8 6 4 2 -10 -8 -6 -4 2 -2 4 6 10 8 -2 -4 -6 -8 -10 b) x2 + 8x + 16 = 0 10 8 6 4 2 -10 -8 -6 -4 2 4 6 8 10 2 4 6 8 10 2 4 6 8 10 2 -2 4 6 8 10 -2 -4 -6 -8 -10 c) x2 + 4x + 6 = 0 10 8 6 4 2 -10 -8 -6 -4 -2 -2 -4 -6 -8 -10 Ex. 2 ­ Estimate the solution(s). a) x2 ­6x + 4 = 0 10 8 6 4 2 -10 -8 -6 -4 -2 -2 -4 -6 -8 -10 b) ­x2 + 2x + 4 = 0 10 8 6 4 2 -10 -8 -6 -4 -2 -2 -4 -6 -8 -10 Algebra II 3 Chp. 5.2 ­ Solving Quadratic Eqs. by Graphing February 13, 2013 Homework: p. 263 (#14­19, 20­32 Evens, 52, 57­60) Algebra II 4...
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