The inequality is .
(a)
The value of .
Substitute the value in .
.
Since the above statement is true, is a solution of .
(b)
The inequality is .
The value of .
Substitute the value in the inequality.
Since the above statement is false, is not a solution of .
(c)
The inequality is .
The value of .
Substitute the value in the inequality.
.
Since the above statement is true, is a solution of .
(d)
The inequality is .
The value of .
Substitute the value in the inequality.
.
Since the above statement is true, is a solution of .
(a) Yes.
(b) No.
(c) Yes.
(d) Yes.
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