Functions, math homework help

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Functions, math homework help

Which of the following relations is not a function?

a. {(1, 3), (2, 3), (-1, 4), (-3, 3), (-2, 1)}

b. {(­-2, 4), (-3, 4), (-5, 4), (-1, 4), (-6, 4)}

c. {(1, 0), (4, 2), (-3, 5), (1, 8), (2, 6)}

d. {(7, 2), (-7, 3), (1, 8), (6, 4), (-5, 2)}

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What is the domain of the relation shown in the graph below?

a. {-3, -2, 1, 3}

b. {-4, -2, -1, 2, 4}

c. {-4, -3, -2, -1, 1, 2, 3, 4}

d. {-3, -2, -1, 2, 4}

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What is the range of the relation shown in the graph below?

a. {-3, -2, 1, 3}

b {-4, -2, -1, 2, 4}

c. {-4, -3, -2, -1, 1, 2, 3, 4}

d. {-4, -2, 1, 2, 4}

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What is the domain of the relation shown below?

a, {Florida, California, New York, Ohio}

b. {3.2%, 5.3%, 6%, 7.3%, 10%}

c, {5.3%, 6%, 7.3%}

d, {California, Ohio}

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What is the range of the relation shown below?

a. {Florida, California, New York, Ohio}

b, {3.2%, 5.3%, 6%, 7.3%, 10%}

c. {5.3%, 6%, 7.3%}

d. {California, Ohio}

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Which relation is a function?

a. 25 = x2 + y2

b. y = 3×2 – 5x + 6

c, x = y2 – 4

d, 2x – y2 = y2 + 3x

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Which of the following graphs shows a function?

http://www.intervisualtechnology.us/data/1/15332/U3L7Q7A1.jpg

http://www.intervisualtechnology.us/data/1/15333/U3L7Q7A2.jpg

http://www.intervisualtechnology.us/data/1/15334/U3L7Q7A3.jpg

http://www.intervisualtechnology.us/data/1/15335/U3L7Q7A4.jpg

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Find f(-3) for the function f(x) = -4x – 8

a. 4

b. -20

c. -4

d. -3

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Find g(1) for the function g(x) = x3 + 3x – 2.

a. 4

b. 1

c. 2

d. 7

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Find r(-3) for the function r(x) = 2×2 – x.

a. 39

b. 21

c. 15

d. -15

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