In the rectangular coordinate system, line k is defined by the equation x  2y + n = 0. What is the value of n?
(1) The xintercept of line k is 8.
(2) The yintercept of line k is 4.
Rectangular coordinate system
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 sivaelectric
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Chitra Sivasankar Arunagiri
Chitra Sivasankar Arunagiri

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Hi,
x2y+n =0
From(1) : line pass through (8,0).So, 8+n=0
Sufficient
From(2) : line pass through (0,4). 8+n=0
Sufficient
Hence, D
x2y+n =0
From(1) : line pass through (8,0).So, 8+n=0
Sufficient
From(2) : line pass through (0,4). 8+n=0
Sufficient
Hence, D
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Things are not what they appear to be... nor are they otherwise
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IMO D
a)xintercept means value of x when y=0. Thus 2 variables are known. we can find n
Sufficient
b)yintercept means value of y when x=0. Thus 2 variables are known. we can find n
Sufficient
a)xintercept means value of x when y=0. Thus 2 variables are known. we can find n
Sufficient
b)yintercept means value of y when x=0. Thus 2 variables are known. we can find n
Sufficient
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 krishnasty
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IMO D
From 1 : line passes through (8,0). Sufficient
From 2 : line passes through (0,4). Sufficient
From 1 : line passes through (8,0). Sufficient
From 2 : line passes through (0,4). Sufficient
 sivaelectric
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OA D
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Chitra Sivasankar Arunagiri
Chitra Sivasankar Arunagiri