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Elementary,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 352 Weeks Ago, 4 Days Ago |
| Questions Answered: | 20103 |
| Tutorials Posted: | 20155 |
MBA, PHD
Phoniex
Jul-2007 - Jun-2012
Corportae Manager
ChevronTexaco Corporation
Feb-2009 - Nov-2016
Showing work is not required
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               Textbook Reading Assignment
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Read the chapter section on Systems of Linear Inequalities in the course textbook.Â
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Systems of Linear Inequalities
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           Select the correct answer.
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(1)      The point ( 3 , 1 ) lies within the region defined by the linear inequality.   y > 2 x + 7
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           (a)     True       (b)    False
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(2)      The point ( 1 , 3 ) lies within the region defined by the linear inequality.   y ≤ 2 x − 7
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           (a)    True       (b)    False
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(3)      The point ( − 2 , 1 ) does NOT lie within the region defined by this inequality.  Â
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                       y > 4 x + 5
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           (a)    True       (b)    False
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(4)      The point ( − 2 , − 3 ) does NOT lie within the region defined by this inequality.  Â
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                       y ≤ 4 x + 5
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           (a)    True       (b)    False
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(5)      The graph of this linear inequality includes the reference line y = 5 x + 9 .         Â
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           (a)       y ≥ 5 x + 9             (b)    y < 5 x + 9
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           (c)       5 x − y > 9             (d)    y > 5 x + 9
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(6)      The graph of this linear inequality does NOT include the reference line y = 2 x + 7 .
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           (a)       y ≥ 2 x + 7             (b)    y ≤ 2 x + 7
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           (c)       2 x − y ≤ − 7           (d)    y > 2 x + 7
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(7)      Which of these is equivalent to the given linear inequality? 9 x + 6 y ≤ − 0.75
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           (a)       y ≤ − ( 3 / 2 ) x − 1 / 8           (b)    y ≤ ( 3 / 2 ) x − 1 / 8
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           (c)       2 x + 6 y ≤ − 1                    (d)    y ≤ 6 x − 1
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(8)      Which of these is equivalent to the given linear inequality? 7 x − y > 11
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           (a)       y < 7 x − 11           (b)    7 x + y > 11
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           (c)       y > 7 x − 11           (d)    y > − 7 x + 11
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(9)      Which of these ordered pairs is included in the region formed by this system of      inequalities?
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                       − 2 x + 1 y < − 3
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                       + 4 x − 8 y < 11       Â
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           (a) ( 1 , − 2 )   (b) ( 1 , 2 )      (c) ( 2 , − 3 )   (d) ( 1 , − 3 )   (e) ( 2 , 0 )
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(10)    Which of these ordered pairs is included in the region formed by this system of      inequalities?
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                       + 2 x + 3 y > − 3
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                       − 4 x + 6 y < 9         Â
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           (a) ( 1 , − 2 )   (b) ( 1 , 2 )      (c) ( 2 , 1 )      (d) ( 1 , − 3 )   (e) ( − 3 , − 1 )
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For problems (11) through (15) , refer to the graph of two linear inequalities given           below.
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(11)    Which of these ordered pairs is included in the region formed by this system of      inequalities?     Â
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           (a) ( 1 , 2 )       (b) ( 1 , − 2 )    (c) ( 2 , 3 )       (d) ( − 3 , − 3 ) (e) ( 1 , 1 )
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(12)    Which of these ordered pairs is NOT included in the region formed by this system of          inequalities?     Â
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           (a) ( 1 , − 4 )    (b) ( 1 , − 2 )    (c) ( 2 , 3 )       (d) ( − 3 , − 6 ) (e) ( − 3 , − 8 )Â
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(13)    If m is positive and b is and negative, then one of the two linear inequalities is of the        form __________ .
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           (a)       y < m x + b             (b)    y ≤ m x + b
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           (c)       y > m x + b             (d)    y ≥ m x + b
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(14)    If m is negative and b is and positive, then one of the two linear inequalities is of the        form __________ .
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           (a)       y < m x + b              (b)    y ≤ m x + b
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           (c)       y > m x + b              (d)    y ≥ m x + b
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(15)Â Â Â Â The point of intersection of the system is in Quadrant __________ .
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           (a)       I                                  (b)    III
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           (c)       II                                 (d)    IV
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For problems (16) through (20) , refer to the linear system of inequalities given below.
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                       + 4 x − 12 y < − 15
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                       + 7 x + 4 y ≥ 9         Â
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(16)Â Â Â Â The graph of this system of inequalities includes the reference line __________ . Â Â
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           (a)       y = ( 4 / 9 ) x − ( 4 / 7 )          (b)    y = − ( 7 / 4 ) x + ( 9 / 4 )
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           (c)       y = ( 4 / 9 ) x + ( 7 / 4 )          (d)    y = − ( 7 / 4 ) x − ( 9 / 4 )
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(17)Â Â Â Â One form of a solution to this system of inequalities is __________ . Â Â Â Â Â Â Â Â Â
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           (a)       x ≥ 12 / 25 , y ≥ ( 1 / 3 ) x + ( 5 / 4 ) Â
           (b)       x ≥ 25 / 12 , y > ( 1 / 3 ) x − ( 5 / 4 )
           (c)       x ≥ 12 / 25 , y > ( 1 / 3 ) x + ( 5 / 4 ) Â
           (d)       x ≥ 12 / 25 , y < ( 2 / 3 ) x + ( 5 / 4 )
           (e)       x ≤ 25 / 12 , y > ( 1 / 3 ) x + ( 5 / 4 )
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(18)Â Â Â Â Another form of a solution to this system of inequalities is __________ . Â Â Â
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           (a)       x ≥ 12 / 25 , y ≥ ( 1 / 3 ) x − ( 9 / 4 ) Â
           (b)       x < 25 / 12 , y > ( 1 / 3 ) x + ( 5 / 4 )
           (c)       x > 12 / 25 , y > ( 1 / 3 ) x − ( 9 / 4 ) Â
           (d)       x ≥ 12 / 25 , y < ( 1 / 3 ) x + ( 5 / 4 )
           (e)       x < 12 / 25 , y ≥ ( 9 / 4 ) x − ( 7 / 4 )
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(19)    Which of these ordered pairs is included in the region formed by this system of      inequalities?
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           (a) ( 1 , − 2 )   (b) ( 1 , 2 )      (c) ( 2 , 1 )      (d) ( 1 , − 3 )   (e) ( 1 , 1 )
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(20)    Which of these ordered pairs is NOT included in the region formed by this system of          inequalities?
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           (a) ( − 1 , 2 )   (b) ( 1 , 2 )      (c) ( 1 , 3 )      (d) ( 1 , 4 )      (e) ( 1 , 6 )
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           For problems (21) through (25) , refer to the linear system of inequalities given below.
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                       + 3 x + 10 y ≥ − 12
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                       + 4 x − 7 y < 9         Â
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(21)Â Â Â Â The graph of this system of inequalities includes the reference line __________ . Â Â
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           (a)       y = ( 3 / 10 ) x − ( 5 / 6 )        (b)    y = − ( 10 / 3 ) x + ( 9 / 4 )
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           (c)       y = ( 4 / 7 ) x + ( 6 / 5 )          (d)    y = − ( 3 / 10 ) x − ( 6 / 5 )
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(22)Â Â Â Â One form of a solution to this system of inequalities is __________ . Â Â Â Â Â Â Â Â Â
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           (a)       x ≥ 6 / 61 , y > ( 4 / 7 ) x − ( 9 / 7 )  Â
           (b)       x ≥ 61 / 6 , y > ( 1 / 7 ) x + ( 9 / 7 )
           (c)       x < 6 / 61 , y > ( 1 / 4 ) x + ( 5 / 9 )  Â
           (d)       x < 6 / 61 , y < ( 7 / 4 ) x − ( 5 / 7 )
           (e)       x ≤ 6 / 61 , y ≥ ( 4 / 7 ) x + ( 7 / 9 )
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(23)Â Â Â Â Another form of a solution to this system of inequalities is __________ . Â Â Â
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           (a)       x ≥ 6 / 61 , y ≥ − ( 3 / 7 ) x − ( 6 / 5 )
           (b)       x < 61 / 6 , y > ( 1 / 7 ) x + ( 5 / 6 )
           (c)       x < 6 / 61 , y ≥ ( 3 / 4 ) x + ( 5 / 9 )  Â
           (d)       x ≤ 6 / 61 , y < − ( 3 / 4 ) x − ( 5 / 7 )
           (e)       x < 6 / 61 , y ≥ − ( 3 / 10 ) x − ( 6 / 5 )
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(24)    Which of these ordered pairs is included in the region formed by this system of      inequalities?
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           (a) ( 1 , − 2 )   (b) ( 1 , 2 )      (c) ( 1 , − 3 )   (d) ( 1 , − 4 )   (e) ( 1 , − 5 )
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(25)    Which of these ordered pairs is NOT included in the region formed by this system of          inequalities?
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           (a) ( − 2 , 1 )   (b) ( 1 , − 3 )   (c) ( − 3 , 1 )   (d) ( − 4 , 1 )   (e) ( − 3 , 2 )  Â
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