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Mathematics
Mathematics
Problem
Given the family of lines,
a
(
2
x
+
y
+
4
)
+
b
(
x
−
2
y
−
3
)
=
0
a(2x + y + 4) + b(x - 2y - 3) = 0
a
(
2
x
+
y
+
4
)
+
b
(
x
−
2
y
−
3
)
=
0
. Among the lines of the family, the number of lines situated at a distance of
10
\sqrt{10}
10
from the point
M
(
2
,
−
3
)
M(2, -3)
M
(
2
,
−
3
)
is: (A) 0 (B) 1 (C) 2 (D)
∞
\infty
∞
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