Reflections and Stretches

Hello, my name is Kyle Cuellar. I will be summarizing our class on Reflections and Stretches. Mr. Piatek began the class by starting a new lesson (reflections) and by making us look at the graph below.

We then answered two questions about the graph.

 When you reflect a point over the x-axis, you will need to make the y-values negative and when you reflect a point over the y-axis, you will need to make the x-values negative.

After that, Mr. Piatek answered example 1. He also showed us the rules about reflections.

 Here are the examples that we answered during the class:

Reflection over x-axis

 Reflection over y-axis

 Reflection over x-axis but y-values are multiplied by -2

Reflection of f(x) over both x-axis and y-axis

The next day, Mr. Piatek started another lesson and it's all about stretches. There are two types of stretches, vertical stretches and horizontal stretches.

Mr. Piatek then showed us how to do the first example.

I found a video about the stretches and reflections of functions:

Just a quick note: When performing transformations always perform the horizontal and vertical stretches before the translations (up, down, left, right).

This is what we learned in class the last two days. I hope I was able to help you with this information.

Sorry I'm not a good writer. Thanks for reading this blog though. I look forward on learning with all of you this sem.

Your Classmate,

Kyle