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Mathematics
Problem
Let a line pass through the points
(
a
,
3
)
(a,3)
(
a
,
3
)
and
(
4
,
9
)
(4,9)
(
4
,
9
)
. Which of the following is its equation in point–slope form using the point
(
4
,
9
)
(4,9)
(
4
,
9
)
? a)
y
−
9
=
4
−
a
6
(
x
−
4
)
y-9=\dfrac{4-a}{6}(x-4)
y
−
9
=
6
4
−
a
(
x
−
4
)
b)
y
−
9
=
6
4
−
a
(
x
−
4
)
y-9=\dfrac{6}{4-a}(x-4)
y
−
9
=
4
−
a
6
(
x
−
4
)
c)
y
−
3
=
6
4
−
a
(
x
−
a
)
y-3=\dfrac{6}{4-a}(x-a)
y
−
3
=
4
−
a
6
(
x
−
a
)
d)
y
−
9
=
6
a
−
4
(
x
−
4
)
y-9=\dfrac{6}{a-4}(x-4)
y
−
9
=
a
−
4
6
(
x
−
4
)
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