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Pre-Algebra
15. Linear Functions
15.1 Distance formula:
d
=
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}
d
=
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
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