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Using a graphing calculator, choose the equation corresponding to the graph

Question : Using a graphing calculator, choose the equation corresponding to the graph : 2151611

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

60) Find the x-intercept(s) for the equation of the parabola: y = x2 + 4x - 12

A) -4 and 12

B) -12

C) -6 and 2

D) 6 and -2

61) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: 6x + 7 = x2.

A) x = 1, -7

B) x = -1.59, -4.41

C) x = -1, 7

D) x = 4.41, 1.59

62) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: 6x2 - 16x + 8 = 0.

A) x = 2, 0.66

B) x = -2, -0.66

C) x = -2, -0.67

D) x = 2, 0.67

63) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: 3x2 = 9x + 30.

A) x = 5, -2

B) x = -5, -2

C) x = -5, 2

D) x = 3, 5, -2

64) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: x2 - 8 = 6x.

A) x = 7.12, -1.12

B) x = -7.12, 1.12

C) x = -8.69, 0.69

D) x = 8.69, -0.69

65) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: 3x2 = -8x - 12.

A) x = 1.33 + 1.49i, -1.33 - 1.49i

B) x = -1.33 + 1.49i, 1.33 + 1.49i

C) x = -1.33 + 1.49i, -1.33 - 1.49i

D) x = -1.33 - 1.49i, 1.33 - 1.49i

66) Solve the following quadratic using any method: 10y2 = y

A) x = 0, 10

B) x = 0, 0.1

C) x = 0, -0.1

D) x = 0.1

67) Solve the following quadratic using any method: (2/3)x2 = 24

A) x = 6

B) x = -6, 6

C) x = -4, 4

D) x = -36, 36

68) Solve the following quadratic using any method: 81x2 = 121

A) (11/9), (-11/9)

B) (12/5), (-12/5)

C) 4, -4

D) 3, -3

69) Write the equation 7x + 9 = 2x + 5 as a function.

A) f(x) = -5x + 4

B) f(x) = 9x + 14

C) f(x) = 5x + 4

D) f(x) = 5x - 4

70) Solve the following quadratic using any method: 2x2 - 14x = 0

A) 0, 7

B) -7, 7

C) 0, 3.5

D) 0, -7

71) Solve the following quadratic using any method: (3/4)x2 = 48

A) -4, 4

B) -8, 0

C) -8, 8

D) 0, 8

Graph using a graphing calculator.

72) 6m2 + 10m + 1 = 0

A) -0.9, -2.4

B) -0.1, -1.6

C) -0.1, -0.8

D) 0.1, -1.8

73) x2 - 9x - 1 = 0

A) 9.1, -9.1

B) 0.1, -0.1

C) 9.1, -0.1

D) 0.1, -9.1

74) x2 - x - 27 = 0; x between 5 and 6

A) 5.8

B) 5.5

C) 5.6

D) 5.7

75) 2x2 - 4x - 10 = 0; x between 3 and 4

A) 3.3

B) 3.2

C) 3.5

D) 3.4

76) x2 - 2x - 2 = 0; x between 2 and 3

A) 2.6

B) 2.7

C) 2.9

D) 2.8

77) 3x2 - 9x - 8 = 0; x between 3 and 4

A) 3.6

B) 3.8

C) 3.9

D) 3.7

Provide an appropriate response.

78) Using a graphing calculator, choose the equation corresponding to the graph:

A) y = 3x2 - 4x + 1

B) y = -3x2 - 4x - 1

C) y = 3x2 + 4x + 1

D) y = -3x2 + 4x - 1

79) Using a graphing calculator, choose the equation corresponding to the graph:

A) y = (x + 3) (x + 1)

B) y = (x - 3) (x - 1)

C) y = (x - 3) (x + 1)

D) y = (x + 3) (x - 1)

80) Solve the system of quadratic equations:

y = x2 - 4x + 5

y = -2x2 + 8x - 7

A) (1, 2)

B) (2, 1)

C) both A and B

D) no solution

Solution
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