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UPSC NDA I 2018 Mathematics Solved Paper
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© examsnet.com
Question : 57
Total: 120
What is the equation of the straight line passing through the point (2, 3) and making an intercept on the positive y-axis equal to twice its intercept on the positive x-axis?
[NDA I 2018]
2
x
+
y
=
5
2
x
+
y
=
7
x
+
2
y
=
7
2
x
−
y
=
1
Validate
Solution:
👈: Video Solution
Equation of line is
x
a
+
y
2
a
=
1
⇒
2
x
+
y
=
2
a
....(1)
Putting
(
2
,
3
)
, we get
2
a
=
7
∴ Equation of line is
2
x
+
y
=
7
© examsnet.com
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