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Byju's Answer
Standard X
Mathematics
Representing a Pair of Linear Equations in Two Variables Graphically
The graph of ...
Question
The graph of x^2 +y = 10 and the graph of x+y = 0 intersect in 2 points , then the square of distance between the two points is
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Solution
The
given
equations
are
:
x
2
+
y
=
10
.
.
.
.
.
1
x
+
y
=
10
.
.
.
.
.
2
Now
,
from
2
,
we
get
y
=
10
-
x
Put
the
value
of
y
in
1
,
we
get
x
2
+
10
-
x
=
10
⇒
x
2
-
x
=
0
⇒
x
x
-
1
=
0
⇒
x
=
0
or
x
-
1
=
0
⇒
x
=
0
or
x
=
1
When
x
=
0
,
then
y
=
10
-
x
=
10
-
0
=
10
When
x
=
1
,
then
y
=
10
-
x
=
10
-
1
=
9
So
,
points
of
intersection
are
:
0
,
10
and
1
,
9
Now
,
we
know
that
distance
between
two
points
x
1
,
y
1
and
x
2
,
y
2
is
distance
=
x
2
-
x
1
2
+
y
2
-
y
1
2
Now
,
distance
between
0
,
10
and
1
,
9
=
1
-
0
2
+
9
-
10
2
=
1
+
1
=
2
Now
,
square
of
the
distance
between
=
2
Suggest Corrections
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