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Use Radicals to Model Distance and Geometry
Worksheet
Grade Level
Algebra I
ALG1.104 Use Radicals to Model Distance and Geometry
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For points U(-2, 5) and V(7, 1), a student writes sqrt((-2 - 7)
2
+ (5 - 1)
2
). Which statement is correct?
A
The model is wrong because the larger coordinate must always be written first.
B
The model is correct; reversing subtraction order still gives the same distance after squaring.
C
The model should be sqrt((-2 - 7) + (5 - 1)) without squares.
D
The model gives area, not distance, because it includes squares.
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