1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the equation of the straight line which is perpendicular to y = x and passes through (3, 2) ?
A
x $$-$$ y = 5
B
x + y = 5
C
x + y = 1
D
x $$-$$ y = 1
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The straight lines x + y $$-$$ 4 = 0, 3x + y $$-$$ 4 = 0 and x + 3y $$-$$ 4 = 0 form a triangle, which is
A
isosceles
B
right angled
C
equilateral
D
scalene
3
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

The number of points represented by the equation $x = 5$ on the $xy$-plane is

A

Zero

B

One

C

Two

D

Infinitely many

4
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

If a variable line passes through the point of intersection of the lines $x + 2y - 1 = 0$ and $2x - y - 1 = 0$ and meets the coordinate axes in $A$ and $B$, then what is the locus of the mid-point of $AB$?

A

$3x + y = 10xy$

B

$x + 3y = 10xy$

C

$3x + y = 10$

D

$x + 3y = 10$

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