Fit Functions to Real-World Data
Statistics and Probability · Flashcards
STATISTICS AND PROBABILITY · FLASHCARDS
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QUESTION
Find the vertex
x
x
x
-coordinate of
y
=
2
x
2
−
8
x
+
1
y = 2x^2 - 8x + 1
y
=
2
x
2
−
8
x
+
1
.
QUESTION
Identify the model:
y
=
120
(
1.05
)
t
y=120(1.05)^t
y
=
120
(
1.05
)
t
(choose linear, quadratic, or exponential).
QUESTION
Identify the model:
y
=
−
2
(
x
−
3
)
2
+
7
y=-2(x-3)^2+7
y
=
−
2
(
x
−
3
)
2
+
7
(choose linear, quadratic, or exponential).
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ANSWER
Quadratic. Vertex form
y
=
a
(
x
−
h
)
2
+
k
y=a(x-h)^2+k
y
=
a
(
x
−
h
)
2
+
k
indicates parabola.
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