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Parabola - Focus/Directrix Definition

Author:Steve Weissburg

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Transforming Random Variables
Parallel Line Image Maker
Steel Chair
Slope Between 2 Points (Phase 2)
Which Quadrilateral is Which?

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Fastest descent with 5 segments
RopeHanging_2
A Very Bumpy Wave
Tangent Line applet
how to make a bisector
Chen_Marlin_Geometric_Mean

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Dilation
LCM and GCD
Functions
Piecewise Functions
Arithmetic

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