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Honors Algebra II Midterm Review Answer Key - Chapter P P.2 ...

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<strong>Honors</strong> <strong>Algebra</strong> <strong>II</strong> <strong>Midterm</strong> <strong>Review</strong> <strong>Answer</strong> <strong>Key</strong> - <strong>Chapter</strong> 11.2 Linear Equations in One Variablea) {! } (no sol.) b) x = 1c) x = 94 d) x = 2A ! PVe) t = f) h =2Pr!rsbg) L = h) x =1 ! r2(1 ! 2 a )i) r = 2 or r = 6/5 j) x = 11/3 or x = -51.4 Quadratic Equations & Applications1) ± 2 22) ± 5 3) 5 ± 29 4) -1/2, 25)! 5 3 ± i 6) ± 3 2 i 7 ± 8 28) -5/7, 12 2EquationValue of theDiscriminantNumber ofRootsReal orImaginary Roots9) 8x 2 – x + 1 = 0 -31 2 Imaginary10) x 2 – 3 = -6x 48 2 Real (Irrational)11) -12x 2 -10x = 4 -92 2 Imaginary12) 9x 2 – 30x + 25 = 0 0 1 Real (Rational)


1.5 Complex Numbers1) a) 5i 6b) 16ic) !6 6 d) i 14e) -343i f) 5i 2 + 1522) a) 2 – 7i b) 3 + 5i3) a) x = 3, y = 2 b) x = 2/3, y = 24) a) 6 – 2i b) -6 + ic) -4 – i d) -16 + 8ie) 26 – 7i f) 169g) 15 – 8i h) -ii) -i j) -72ik) -5i/6 l) 13i/635 10i! 14 23im) + n) !53 5329 291.6 Other Types of Equationsa) 37/11 b) -1/2c) ! (no sol.) d) ± 3 2e) !16 ± i 36f) ±6,!!!!±i 3g) 0, ± 2, -3 h) -23, -2i) 21/5 j) -11/2k) 1, -11/4 l) 3, 22


1.7 Linear Inequalities in One Variablea) 12 x < 52 b) x > -4[12, 52) (-4, ! )c) x < 3/2 and x > -6 d) x > 25/3 or x < -11/3(-6, 3/2) (!" , -11/3) ! (25/3, ! )e) -2 < x < 10 f) x < 6 and x > -9[-2, 10] [-9, 6]1.8 Other Types of Inequalitiesa) (-7, 3) b) (!" , -5] ! [1, ! )c) x 3 + 2x 2 – 9x + 2 > 20 d) ( !" , 0] ! [2, ! )[-3, -2] ! [3, ! )e) (-5, -3/2) ! (-1, ! ) f) ( !" , -1) ! (-2/3, 1) ! (3, ! )


<strong>Honors</strong> <strong>Algebra</strong> <strong>II</strong> <strong>Midterm</strong> <strong>Review</strong> <strong>Answer</strong> <strong>Key</strong> - <strong>Chapter</strong> 22.1 Linear Equations in Two Variables1) y = -62) a) 2x + 3y = 12 b) y = (1/3)x + 1 c) 2x – y – 5 = 0d) y = -7 e) x = -2 f) y = (-3/2)x + 5/21.1 Graphs of Equations1) a) x-int (3, 0) b) x-int (-4, 0) c) x-int (10, 0)y-int (0, 9) y-int (0, 2) y-int (0, -5)2) a) origin b) x-axis c) y-axis3) a) (x + 6) 2 + (y – 2) 2 = 16b) (x - 5) 2 + (y + 3) 2 = 13c) (x - 1) 2 + (y + 13/2) 2 = 85/42.2 Functions1) a) no b) no c) yes d) yes e) no f) yes2) a) [-3, 3] b) x ! R, x ! 0, 8, -5 c) x ! R d) x ! R, x ! 11, x > -23) a) -170 b) 132.3 Analyzing Graphs of Functions1) a) even b) neither c) odd2) a) all Reals b) all Reals c) 3 d) -3 e) -2f) increasing (- ! , ½) ; decreasing (1/2, 7/2) ; increasing (7/2, ! )3) a) 2/3, -5 b) 4, -4, -3 c) 5/2d) 0, 5/3, -5/3 e) -2/3 f) ½4) a) -24 ; 144 ; x 2 – 18x + 56b) -9 ; 2 7 ! 9 ; 3i 2 ! 92.4 Parent Functions1) e 2) g 3) f 4) b 5) d 6) c 7) a8) a) y = (1/5)x b) y = (-2/3)x – 17/3


2.5 Transformations of Functions1) a) shift 2 units down b) reflect over y-axis2) f(x) = |x + 4| - 1, f(x) = |x|, all Reals, y > -13) f(x) = (x – 3) 2 + 2, f(x) = x 2 , all Reals, y > 24) f(x) = ! x ! 1 + 3, f(x) = x , x > 1 , y < 35) f(x) = (x + 2) 3 + 4, f(x) = x 3 , all Reals, all Reals36) f(x) = 2 x + 23! 1 f(x) = x, all Reals, all Reals2.6 Combinations of Functions1) a) -3x + 4 b) 4x 2 + 11x – 3 c) 4x + 2 d) 4x + 112) a) f(g(x)) = x – 8/3, g(f(x)) = x – 83b) f(g(x)) = x + 3, g(f(x)) = x 3 + 3c) f(g(x)) = 2x + 12, g(f(x)) = 2x2 + 6

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