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Algebra II FINAL EXAM REVIEW
Key PowerPoint slides from Ch. 7, 8, 12 & 13 Answer KEY for Final Review Form A
3 Types of Polynomials when solving for x-intercepts:
(quadratic examples given)
Quadratic Function:
Does NOT intersect x-axisβ¦
Intersects x-axisβ¦ Intersects x-axisβ¦
therefore cannot factor in terms of Real #βs.
but not at integer or fractional values.
at integer or fractional value(s).
Use quadratic formula to find the complex zeros; conjugate pairs
Use quadratic formula to find the real zeros.
Use the x-intercepts to factor & the 0-product rule to find the zeros. (Or use Quadratic formula)
7.6
Equations of Circles
Equation
Center (h, k) (h, k)
Radius
Equations of Ellipses
Standard form of equation
Center (h, k)
Stretch a = horizontal scale factor
b = vertical scale factor
Ch. 8 Conic Section Formulas
Ch. 8 Equations of Parabolas
Form of Equation
Direction of Opening vertically oriented; (up/downward) horizontally oriented;
(right, left)
Vertex
(h, k)
(h, k)
Axis of Symmetry
x = h
y = k
Focus
Directrix y = k β f x = h β f
Equations of Hyperbolas
Form of Equation
Direction of Opening horizontally;
(left & right)
vertically;
(up & down)
Center Point (h, k) (h, k)
Vertices (h β a, k) & (h + a, k) (h, k β b) & (h, k + b)
Focus
Asymptotes
12.2 Use the Law of Sines to find the missing parts of each triangle.
1.) Set up the Law of Sines
2.) Solve a proportion that only
has ONE variable.
3.) Solve for first variable.
4.) Repeat until all parts have been
found.
12.3 Law of Cosines - Variations
Law of Sines vs. Cosines
Law of Sines Law of Cosines
S-A-A S-A-S
S-S-A (ambiguous) S-S-S
β’ Standard β position: an angle where one side is on the (+) x-axis & the other is called the terminal side.
β’ Terminal side: the side of an angle in standard position NOT on the positive x-axis.
β’ Reference β : a right β drawn connecting terminal side to the x-axis.
β’ Reference β : the acute angle between the terminal side & the x-axis.
13.1
90
60 45
30
π
π
π
π π
π π
π
1, 0
π
π, π
π
π
π, π
π
π
π , π
π 0, 1
cosecant: the reciprocal of sine. undefined: sinA = 0 or A = 2ππ
secant: the reciprocal of cosine.
undefined: cosA = 0 or A = π
2 + πn
cotangent: the reciprocal of tangent. undefined: tanA = 0 or A = ππ
y = csc x
y = sin x
y = csc x
13.4
y = k + bβsin[ (πβπ)
π] or y = k + bβcos[
(πβπ)
π]
Amp. = π Max. = π + k Min. = - π + k Period = 2π π Phase shift = h Vertical shift = k
Average Value = πππ.+πππ.
π
13.4 β 13.5 Transformations:
Identities: cos y = sin x
sin x = sin(π β x)
sin x = cos(π
π β x)
sin x = cos (x β π
π)
y
x
a
b c
cos x = π
π
sin y = π
π
sin x = π
π
cos y = π
π
x
π β x
1
sin x
D
C A
B
sin(π β x)
tan A = π πππ΄
πππ π΄
π ππ2π₯ = (sin π₯)2
πππ 2π₯ = (cos π₯)2
SOH-CAH-TOA
x
y
r
x
r
y
tan
cos
sin
(x, y) = (cosΞΈ, sinΞΈ)
sinΞΈ = πππ.
βπ¦π.
cosΞΈ = πππ.
βπ¦π.
tanΞΈ = πππ.
πππ.
13.6 +
Algebra II Semester II FINAL Exam Review KEY Form A
Name Period Date
Answer each question and show all work clearly on a separate piece of paper.
Chapters 7β8 β’ Review 1. Rewrite each equation in the forms requested. Solve for the zeros of each quadratic.
G = General form V = Vertex form F = Factored form
a. y = 2(x β 3)(x β 2) G: y = 2x2 β 10x + 12 V: y = 2(x β 2.5)
2 β 0.5 x = 3, 2
b. y = -2(x β 3.5)
2 + 4.5 G: y = -2x
2 + 14x β 20 F: y = -2(x β 2)(x β 5) x = 2, 5
c. y = x
2 β 8x + 7 V: y = (x β 4)
2 β 9 F: y = (x β 7)(x β 1) x = 1, 7
2. Use C =2 + 5i, D = β3 + i, and E = 4 β 7i to evaluate each expression. Give answers in
the form a + bi. Substitution Complex #
a. C + 2E (2 + 5i) + 2(4 β 7i) 13 β 6i
b. D Γ· E (β3 + i) Γ· (4 β 7i) 39 23
41 41i
c. D2 (β3 + i)
2 48 β 14i
d. CD + E (2 + 5i)( β3 + i) + (4 β 7i) β18 β 15i
3. Write an equation for a cubic function with real coefficients, zeros at β5 and 3i,
and y-intercept 5.
Equation: 3 2 915 5
= + 9y x x x
4. Give the vertex and zeros of each quadratic function, and tell whether the vertex is a
maximum or a minimum.
a. y = 5(x β 7)2
+ 2 Vertex: (7, 2) Minimum Zeros: x = 10
57 Β± i
b. y = 11(x β 9)(x β 2) Vertex: (5.5, β134.75) Minimum Zeros: x = 2, 9
c. 21= 4 8
2y x x Vertex: (β4, 0) Maximum Zeros: x = β4
5. Sketch a graph of each function. Include any asymptotes as dashed lines.
a.
2
1=
+ 2y
x b.
2 + 3 + 2=
+ 2
x xy
x c.
1= 2 +
+ 2y
x
a.
b.
c.
6. Write an equation in standard form for each conic section & identify the following:
a.
b.
(h, k) = (4, 0)
a = 3 b = 5
Equation:
(h, k) = (0, -3)
a = 1 b = 2 c =
F1 = (h β c, k) F2 = (h + c, k)
= (- , -3) = ( , -3)
Equation:
Chapters 12-13 β’ Review Form A
7. Find the value of x. Round answers to the nearest tenth.
a. b.
c.
a. 11.4
b. 18.2
c. 100.3Β°
8. Port Byron is 90 miles directly north of Port Allen. Ship A leaves Port Allen, moving at a
bearing of 45Β° and a speed of 19 mi/h. At the same time, ship B leaves Port Byron,
moving at a bearing of 120Β° and a speed of 22 mi/h. Assume that Port Allen is located at
the origin and that due north is in the positive y-direction.
a. After 4 hours, how far is ship A from Port Allen? 76 miles
b. After 4 hours, how far is ship A from Port Byron? about 66 miles
c. After 10 hours, how far apart are the two ships? About 164 miles
9. Find the exact value of each expression.
a. sin 240 = 3
2 b.
5sec
4
= 2 c. 2
tan3
= 3
d. sin (75) = 2 6
4
e.
1 5tan sin
13
= 5
12 f. cos
β1(cos 290) = 70Β°
10. Circle P has diameter 12 inches. Find the length of arc AB and the area of the shaded
sector.
s =
in. A =
in2