October 11, 2015

Worksheet Answers10. (x+2)(x-2)

12. (x-25)(x-4)

14. (3x+1)(3x-1)

16. (x+8)(x-8)

18. (x+9)(x-9)

20. (x+10)(x-10)

22. (2x+1)(2x-1)

24. (3x+2)(3x-2)

26. (x+9)(x-4)

28. (x+1)(x+4)

30. (x+5)(x+8)

32. (x+11)(x+9)

34. (5x-6)(x+2)

36. (2x+3)(X+5)

38. (3x+7)(x+3)

40. (x-2)(x+36)

42. 3x(x+7)

44. (x+6)(x-4)

46. (x-14)(x+12)

48. (2x-5)(2x+5)

50. (x+16)(x+1)

52. (2x+3)(2x+3)

54. (3x-2)(3x+2)

56. 2(x+2)(x-2)

58. 2(x+7)(x-7)

60. (x+14)(x+6)

61. (3x+8)(3x+2)

66. 7(x2+7)

72. (2x-1)(6x+5)

73. (4x+3)(x-2)

October 11, 2015

Review 5.1-5.4 TEST

Standard Form of Quadratic Eq. y = ax2+bx+c (a=0)Axis of Symmetry x = -b/2aVertex (-b/2a, f(-b/2a))

Vertex Form of Quadratic Eq. y = a(x-h)2 + kVertex is (h,k)

Graph patternLin Reg (look at r) vs. Quad Reg (look at r2)

All types of factoring (GCF, F and A, Diff of Squares)

October 11, 2015

True False

1 The greatest common factor of 12x2y2 - 36xy4 + 6x3y3 is 6xy2. If true, then factor out the GCF. True or False

October 11, 2015

2 For the graph of y = 2x2 - 5, what is the vertex?

A x = 0

B (0, -5)

C y = -5

D (2.5, 5)

Multiple choice

October 11, 2015

3 For the graph of y = -2x2+4x+1, what is the axis of symmetry?

A x = 1

B x = -1

C x = 2

D x = -2

Multiple choice

October 11, 2015

4 For the graph of y = -2(x - 2)2 +1, identify the vertex.

A (-2,-1)

B (-2,1)

C (2,1)

D (-2,-15)

Multiple choice

October 11, 2015

5 Does the quadratic y = x2-2x-3, have a min or max? What are the coordinates of the min or max?

A (1,-4), max

B (1,-2), max

C (1,-4), min

D (1,4), min

Multiple choice

October 11, 2015

6 Write the function y = x2-6x-12 in vertex

form.

A y = (x+3)2 - 21

B y = (x-3)2 + 21

C y = (x+3)2 + 21

D y = (x-3)2 - 21

Multiple choice

October 11, 2015

Yes

No

7 Does the equation y = x2+4x-1 match the

graph?

Yes or No

October 11, 2015

Yes

No

8 Does the equation y = -2x2+4x-1 match the

graph?

Yes or No

October 11, 2015

Numeric9 A company's profit P for a product at price p is

represented by P = -15p2+150p+6000.

What is the maximum profit?

October 11, 2015

Numeric10 Write a quadratic function

(in vertex form) with a vertex of (1, 3) and goes through the point (-2, 5).

October 11, 2015

Numeric11 Use a system of equations to find a quadratic equation (standard form) for the set of values: (1, 2), (0, -3), (3, 0).

October 11, 2015

Factor the expression completely:12

October 11, 2015

Homework: Review Sheet 5.1 - 5.3

WS 5.4 Factoring5, 9, 11, 23, 33, 35, 41, 56

October 11, 2015

October 11, 2015

In order to determine r or the r2 value for LinReg or QuadReg, select "DiagnosticOn" after selecting 2nd followed by 0 (CATALOG). The closer the value is to 1, the better the fit of the respective models.

October 11, 2015