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Mathematics
Mathematics
Problem
Consider the function
r
(
x
)
=
2
x
2
−
4
x
+
5
r(x)=2x^{2}-4x+5
r
(
x
)
=
2
x
2
−
4
x
+
5
. Which of the following is the equation of the line tangent to the graph of
r
r
r
that is parallel to the line
3
y
=
9
x
+
4
3y=9x+4
3
y
=
9
x
+
4
? a)
y
=
9
x
−
129
8
y = 9x-\dfrac{129}{8}
y
=
9
x
−
8
129
b)
y
=
3
x
−
9
8
y = 3x-\dfrac{9}{8}
y
=
3
x
−
8
9
c)
y
=
−
1
3
x
+
33
8
y = -\dfrac{1}{3}x+\dfrac{33}{8}
y
=
−
3
1
x
+
8
33
d)
y
=
3
x
−
33
8
y = 3x-\dfrac{33}{8}
y
=
3
x
−
8
33
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