Consider two figures A and D that are defined in the co-ordinate
plane. Each figure represents the graph of a certain function, as
defined below :
A: | x | - | y | = a
D: | y | = d
If the area enclosed by A and D is 0, which of the following is a
possible value of (a, d)?
(1) (2, 1)
(2) (-2, 1)
(3) (-2, 3)
(4) (2, 3)
Answers
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option b is right (-2,1)
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Answer:
(1) (2, 1)
(2) (-2, 1)
Step-by-step explanation:
the area enclosed by A and D is 0
=> A & D are same points
=> A = D
A = | x | - | y |
D = | y |
Equating both
=> | x | - | y | = | y |
=> | x | = 2 | y |
=> |-2| = 2 |1| & |2| = 2 |1|
Option 1 & 2 are correct (2, 1) & (-2, 1)
(1) (2, 1)
(2) (-2, 1)
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