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Byju's Answer
Standard XI
Mathematics
Properties of Inequalities
If x>3 and y=...
Question
If
x
>
3
and
y
=
3
x
+
4
, then
A
y
>
9
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B
y
>
7
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C
y
>
13
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Solution
The correct option is
C
y
>
13
Given, x > 3 and y = 3x + 4
x
>
3
⇒
3
x
>
3
×
3
⇒
3
x
>
9
⇒
3
x
+
4
>
9
+
4
⇒
3
x
+
4
>
13
Since y = 3x + 4,
y > 13
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