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Mathematics
Mathematics
Problem
A line
L
L
L
passes through the point
(
2
k
,
k
)
(2k,k)
(
2
k
,
k
)
and is perpendicular to
7
x
+
3
y
−
1
=
0
7x+3y-1=0
7
x
+
3
y
−
1
=
0
. Another line
M
M
M
passes through
(
1
,
4
)
(1,4)
(
1
,
4
)
and is parallel to
L
L
L
. If
L
L
L
and
M
M
M
meet the
y
y
y
-axis at the same point, find
k
k
k
. a)
28
28
28
b)
31
31
31
c)
25
25
25
d)
21
21
21
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