Given the relation D={(6,4),(8,−1),(x,7),(−3,−6)}. Which of the following values for x will make relation D a function ?
−3
−6
8
6
Any value of x
A
−3
B
Any value of x
C
−6
D
6
E
8
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Solution
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By the definition of function each element has unique image. 6,8,−3 already has image in definition of D. Therefore, only possibility left is −6. Option B is correct.
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