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PSAT Math · Flashcards · Recall
PSAT MATH · FLASHCARDS
Card 1
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QUESTION
What is the slope of a line parallel to
y
=
−
1
3
x
+
7
y=-\frac{1}{3}x+7
y
=
−
3
1
x
+
7
?
QUESTION
Identify the transformation of
y
=
−
f
(
x
)
y=-f(x)
y
=
−
f
(
x
)
relative to
y
=
f
(
x
)
y=f(x)
y
=
f
(
x
)
.
QUESTION
What is the vertex form of a quadratic function?
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ANSWER
y
=
a
(
x
−
h
)
2
+
k
y=a(x-h)^2+k
y
=
a
(
x
−
h
)
2
+
k
. Shows parabola with vertex at
(
h
,
k
)
(h,k)
(
h
,
k
)
and vertical stretch
a
a
a
.
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