chapter 1.7 and 1.8 Flashcards

1
Q

|x|=4

A

(-4,4)

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2
Q

|x|=-4

A

empty/null set

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3
Q

|x|>-4

A

all real numbers

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4
Q

|x|>4

A

(-∞,-4)⋃(4,∞)

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5
Q

|x|<4

A

-4

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6
Q

|x|≥4

A

(-∞,-4]⋃[4,∞)

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7
Q

|x|≤4

A

[-4,4]

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8
Q

|5y-6|=|6-5y|

A

ALL REAL NUMBERS (due to having same absolute value)

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9
Q

|9-8x|>14 (2 part)

A

mult.choic. - 9-8x>14 or 9-8x

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10
Q

|6x-30|=0

A

finite set

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11
Q

|3x+1|≤0

A

finite set

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12
Q

the distance between p and q is 15 units

A

|p-q|=15

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13
Q

n is no more than 6 units from 9

A

|n-9|≤6

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14
Q

p is within .0002 units of 7

A

|p-7|

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15
Q

y=5x+2 - y to be .008 units of 7

A

|y-7|

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16
Q

square bracket :

parenthesis :

A
  • number that IS a part of the solution set

- number that IS NOT a part of the solution set