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Dilating a Line Given Points and Scale Factor
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Expression 6: "x" Subscript, 2 , Baseline equals 4
x
2
=
4
negative 10
−
1
0
10
1
0
6
Expression 7: "y" Subscript, 2 , Baseline equals 2
y
2
=
2
negative 10
−
1
0
10
1
0
7
Points (don't edit)
Points (don't edit)
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8
Expression 11: "b" equals "y" Subscript, 1 , Baseline minus "m" "x" Subscript, 1 , Baseline equals 0
b
=
y
1
−
m
x
1
equals
=
0
0
11
Expression 12: "m" equals StartFraction, "y" Subscript, 2 , Baseline minus "y" Subscript, 1 , Baseline Over "x" Subscript, 2 , Baseline minus "x" Subscript, 1 , Baseline , EndFraction equals 0.5
m
=
y
2
−
y
1
x
2
−
x
1
equals
=
0.5
0
.
5
12
Expression 13: "y" equals "m" "x" plus "b" Has graph. To audio trace, press ALT+T.
y
=
m
x
+
b
13
14
powered by
powered by
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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