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Countdown to Exams - Day 73 - Translations and reflection of graphs

Countdown to Exams - Day 73 - Translations and reflection of graphs

Today's focus in our countdown to exams is the topic of Translations and reflections of graphs. You will be given a function (graph) and be asked to manipulate the function and sketch a new graph sometimes labelling the key points on the graphs. Starting with translations, when you add to the function f(x)+a or f(x+a), this causes the graph to move up/down or left/right. 

f(x)+a is a movement up/down by a units. f(x+a) is a movement left/right by a units (+=left, -=right).

Reflections are caused by making the function negative or the variable negative. 

-f(x) is a reflection in the x axis (the outputs are reversed). f(-x) is a reflection in the y axis (the inputs are reversed)

In the video below, Matt will guide you through the transformations of graphs.

 

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Tuesday, 22 January 2019