# Selecting Members For A Committee

Problems in which you select members for a committee can involve combinations, permutations or both. This MathFAQ examines several similar problems that help to distinguish between permutations and combinations.

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# How Do You Write Out The Solutions To A Dependent System of Linear Equations?

Dependent systems of equations are systems of equations that have many solutions. Typically when you solve a dependent system with substitution or elimination, you get 0 = 0. This indicates that many combinations of x and y will solve the system of equations…but how do you find those ordered pairs?

In the MathFAQ below, I demonstrate two strategies for writing out the solutions to dependent systems of linear equations.

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# How Do I Do Linear Regression in Google Sheets?

Like other spreadsheets, Google Sheets may be used to find a regression model for data. Following a few simple steps, we can graph a set of data in a scatter plot and find the corresponding model.

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# Counting on True / False Quiz

The Fundamental Counting Principle comes up in questions where you are asked the number of ways to answer questions on quizzes. Basic problems can be answered with a tree diagram. However, more complicated questions may require you to use a slot diagram.

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# Finding Equations of Lines

In this post, I’ll demonstrate how we can use y = mx + b to find equations of lines. No need to memorize other equations of lines…it is easier to focus on the data given to us an use it to find m and b.