## Functions: One-to-One and Onto

When learning about the behavior of graphs, the terminology can be confusing. Function? One-to-One? Onto? Use this summary to help keep it all straight. Click [...]

When learning about the behavior of graphs, the terminology can be confusing. Function? One-to-One? Onto? Use this summary to help keep it all straight. Click [...]

Many standardized tests like the ACT, SAT, GRE, and GMAT include problems related to arithmetic and geometric sequences. The differences between these types of sequences, [...]

The GRE is increasingly being accepted by graduate and law schools (in place of the GMAT and LSAT). Check here and with the specific institutions [...]

In order to understand the behavior of the graphs of rational polynomials, you need to consider the asymptotes and holes. This guide will help you [...]

Many standardized tests like the HSPT, ISEE, ACT, and SAT will ask you to perform basic arithmetic computations. You will not see any variables in [...]

Many standardized tests like the ACT, SAT, GRE, and GMAT ask questions related to the central angle, arc length, and sector area of circles. Rather [...]

Lessons in Algebra 2, Trigonometry, and Pre-Calculus courses often involve verifying trigonometric identities. We are so accustomed to solving equations that "verifying" or "providing" [...]

Verbs should agree with the subject. As simple as this sounds, it can often be confusing. This guide will help! Click here for the guide [...]

Lenses and Mirrors refract rays to form an image. Keeping track of whether this image is inverted or upright, magnified or shrunk, etc can be [...]

Students in Biology class focus on learning how to use the Hardy-Weinberg Equations. The Hardy-Weinberg Equilibrium Principle states that allele and genotype frequencies in a [...]