Linear Functions
PSAT · Flashcards · Application
PSAT · FLASHCARDS
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QUESTION
Evaluate the linear function
f
(
x
)
=
2
x
−
7
f(x)=2x-7
f
(
x
)
=
2
x
−
7
at
x
=
5
x=5
x
=
5
.
QUESTION
Find the slope of the line through
(
2
,
5
)
(2,5)
(
2
,
5
)
and
(
6
,
1
)
(6,1)
(
6
,
1
)
.
QUESTION
Find the equation of the line perpendicular to
y
=
1
4
x
−
3
y=\frac{1}{4}x-3
y
=
4
1
x
−
3
through
(
0
,
2
)
(0,2)
(
0
,
2
)
.
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ANSWER
y
=
−
4
x
+
2
y=-4x+2
y
=
−
4
x
+
2
. Perpendicular slope is
−
4
-4
−
4
; passes through
(
0
,
2
)
(0,2)
(
0
,
2
)
.
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