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Byju's Answer
Standard X
Mathematics
Comparing the Ratios of Coefficients of a Linear Equation
Match the col...
Question
Match the column
(
1
)
2
x
+
3
y
=
40
6
x
+
5
y
=
10
(
a
)
Coincident lines
(
2
)
2
x
+
3
y
=
40
6
x
+
9
y
=
50
(
b
)
Intersecting lines
(
3
)
2
x
+
3
y
=
10
4
x
+
6
y
=
20
(
c
)
Parallel lines
A
1
→
a
,
2
→
b
,
3
→
c
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B
1
→
b
,
2
→
a
,
3
→
c
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C
1
→
b
,
2
→
c
,
3
→
a
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D
1
→
c
,
2
→
a
,
3
→
b
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Solution
The correct option is
C
1
→
b
,
2
→
c
,
3
→
a
Write the equations in the form
a
x
+
b
y
+
c
=
0
.
Check for
a
1
a
2
=
b
1
b
2
=
c
1
c
2
......(i) for coincident lines,
a
1
a
2
=
b
1
b
2
≠
c
1
c
2
.......(ii) for parallel lines and
a
1
a
2
≠
b
1
b
2
.........(iii) intersecting lines
.
Then
(1)
2
x
+
3
y
=
40
,
6
x
+
5
y
=
10
2
6
≠
3
5
These line are intersecting lines (b)
(2)
2
x
+
3
y
=
40
,
6
x
+
9
y
=
50
2
6
=
3
9
=
1
3
≠
40
50
=
4
5
These lines are parallel lines (c)
(3)
2
x
+
3
y
=
10
,
4
x
+
6
y
=
20
2
4
=
3
6
=
10
20
=
1
2
These lines are coincident lines(a)
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Similar questions
Q.
On comparing the ratios
a
1
a
2
,
b
1
b
2
and
c
1
c
2
, and without drawing them, find out whether the lines representing the following pairs of linear equations intersect at a point and parallel or coincide:
6
x
−
3
y
+
10
=
0
2
x
−
y
+
9
=
0
Q.
The lines
x
1
=
y
2
=
z
3
and
x
-
1
-
2
=
y
-
2
-
4
=
z
-
3
-
6
are
(a) parallel
(b) intersecting
(c) skew
(d) coincident
Q.
The lines
x
1
=
y
2
=
z
3
and
x
-
1
-
2
=
y
-
2
-
4
=
z
-
3
-
6
are
(a) coincident
(b) skew
(c) intersecting
(d) parallel
Q.
Do the following equations represent a pair of coincident lines?
−
2
x
−
3
y
=
1
6
y
+
4
x
=
−
2
Q.
Assertion :Consider
L
1
:
2
x
+
3
y
+
p
−
3
=
0
L
2
:
2
x
+
3
y
+
p
+
3
=
0
,
where p is a real number, and
C
:
x
2
+
y
2
+
6
x
−
10
y
+
30
=
0
Statement-1: If line
L
1
is a chord of circle
C
, then
L
2
is not always a diameter of circle
C
.
Reason: If line
L
1
is a diameter of circle
C
, then
L
2
not a chord of circle
C
.
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