When we talk about functions in math, we want to know what set of input values are valid (known as the domain).  Knowing the domain of a function also helps us to figure out the range (the set...

Are you trying to figure out what happens to the mean of a data set when you add or remove a point?  The change in the mean really depends on how the data point relates to the original...

Order of magnitude is an idea that is used often in physics, mathematics, computer science, and other disciplines.  It helps us to get a grasp of how large quantities are – but it still helps...

You will often see both quadratic and exponential functions in math, science, finance, and other topics.  It can be helpful to see the differences between them compared side-by-side. So, what...

A quadratic has 3 different forms, and we can switch between all of them (with a little algebra, of course!)  The vertex form of a quadratic is helpful for several reasons, so it helps to know...

Linear equations are used in math throughout algebra and beyond.  Knowing how to solve a linear equation helps us to solve other types of equations, including quadratics, cubics, and other...