Interpreting/Sketching Key Features of Functions
Algebra · Flashcards · Application
ALGEBRA · FLASHCARDS
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QUESTION
On which interval is
f
(
x
)
=
−
2
(
x
+
1
)
2
+
7
f(x)=-2(x+1)^2+7
f
(
x
)
=
−
2
(
x
+
1
)
2
+
7
decreasing?
QUESTION
Identify the average rate of change from
x
=
2
x=2
x
=
2
to
x
=
5
x=5
x
=
5
given
f
(
2
)
=
1
f(2)=1
f
(
2
)
=
1
and
f
(
5
)
=
7
f(5)=7
f
(
5
)
=
7
.
QUESTION
Which interval is
f
(
x
)
=
x
2
−
4
f(x)=x^2-4
f
(
x
)
=
x
2
−
4
positive on?
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ANSWER
(
−
∞
,
−
2
)
∪
(
2
,
∞
)
(-\infty,-2)\cup(2,\infty)
(
−
∞
,
−
2
)
∪
(
2
,
∞
)
. Parabola is positive outside the roots.
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