# 12.09.2018: One Lesson of Math – Unit Review Today’s soundtrack is Space Junk is Forever: Space Junk is Forever, a really cool progressive synth rock album. It sounds like what could happen if Tangerine Dream and Dream Theater collaborated. Amazing stuff!

This afternoon, I’m on to the final assignment before I can write this unit test. In this unit, I’ve been working on quadratic functions. I’ve learned the following:

• Properties of a Quadratic Function

• Quadratic Functions in Standard Form

• Completing the Square

• Analyzing the General Form

• Word Problems

I needed to review a few concepts:

• If I start with the graph of y = x² and want to make congruent parabolas in different places, I can do the following:

• y = (x-2)² will be two units to the right

• y = (x+2)² will be two units to the left

• y = x²-2 will be two units up

• y = x²+2 will be two units down
The interactive quadratic function app on intmath.com helped me a lot with understanding this concept, and it runs a heck of a lot faster than my calculator does!