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## Josh Salsbury

on 17 February 2014

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#### Transcript of Tennis Ball Quadratics

Vertex Form
Prop box up with a backpack
By: Josh Salsbury
Practice rolling the tennis ball and student with towel catching the ball.
Now, I am going to come around and dip the tennis ball into the colored water.
Now roll the ball like you practiced and make sure your partner is ready to catch the ball!
Once finished, put the ball and towel back into the plastic sack.
Now, find the equation of your quadratic by using the formulas we reviewed at the beginning.
You need a calculator
Today's Learning Goals!
Write quadratic equations given a vertex and another point on the parabola
Use completing the square to transform standard form to vertex form.
Transform vertex to standard.
(h,k) is the coordinate of the vertex
Bell work
Write the equation of a parabola that has a vertex at (2,3) and another point of (-4,-3).
I need a boy and girl volunteer!