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My Unit 2 Study Guide

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Written in alphabetical order, domain comes before range, just like x comes before y. This is an easy way to remember the domain is the x-coordinates and range is the y - coordinates.

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If a function is one - to - one, (passes both the vertical and horizontal line tests), then we know that the inverse to that function is also a function.

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First, we know if something is a function by seeing if the graph (or points) pass the vertical line test.
Once we know it's a function, test to see if it passes the horizontal line test, if it does, then it is a special type of function that is called one - to - one.

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Do you know the meaning of these important terms from the unit?

function

independent

dependent

increasing

decreasing

zeros/roots/solutions/x-intercepts

domain

range

one-to-one function

vertical line test

horizontal line test

inverse

relative minimium

relative maximum

y-intercept

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·         Lesson #1 – Introduction to Functions

·         Lesson #2 – Function Notation

·         Lesson #3 – Function Composition

·         Lesson #4 – The Domain and Range of a Function

·         Lesson #5 – One to One Functions

·         Lesson #6 – Inverse Functions

·         Lesson #7 – Key Features of Functions