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Byju's Answer
Standard XII
Mathematics
Slope Intercept Form of a Line
a line passin...
Question
a line passing through the point of intersection of x - 2y + 3 = 0 and 2x - 3y + 4 = 0 and it is parallel to the line joining the points (1,1) and (0,-1). Find the equation.
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Solution
The
given
equation
of
lines
are
,
x
-
2
y
+
3
=
0
.
.
.
.
.
1
2
x
-
3
y
+
4
=
0
.
.
.
.
.
2
Multiply
equation
1
by
2
and
subtract
with
equation
2
,
we
have
,
2
x
-
4
y
+
6
-
2
x
-
3
y
+
4
=
0
⇒
-
y
+
2
=
0
⇒
y
=
2
Sustitute
y
=
2
in
equation
1
,
we
have
x
-
2
×
2
+
3
=
0
⇒
x
=
1
Since
this
line
is
parallel
to
the
line
joining
the
points
1
,
1
and
0
,
-
1
therefore
both
have
same
slope
.
Slope
m
of
the
line
joining
the
points
1
,
1
and
0
,
-
1
=
-
1
-
1
0
-
1
=
2
Now
,
equation
of
the
line
passing
through
x
1
,
y
1
and
having
slope
m
is
,
y
-
y
1
=
m
x
-
x
1
⇒
y
-
2
=
2
x
-
1
⇒
y
=
2
x
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