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.
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.
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.
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.
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.