# Pre-Algebra

### The Pythagorean Theorem

The Pythagorean Theorem 960 664 Teaching Staff

Triangles are an important shape that come up all over the place in life, which is why trigonometry is one of the most important fields of mathematics. Pythagorean theorem is…

Adding and Subtracting Fractions 2000 1520 Teaching Staff

Fractions are a very important part of math, and the first step to becoming comfortable with fractions is learning how to add and subtract them. Learning how to use fractions…

### Solving a System of Equations: Substitution and Elimination

Solving a System of Equations: Substitution and Elimination 794 629 Teaching Staff

When dealing with a system of linear equations there are two methods to algebraically solve the question. One is substitution and the other is elimination which is meant to be…

### Multiplying and Dividing Decimals

Multiplying and Dividing Decimals 750 325 Teaching Staff

Multiplying and dividing is a very important and fundamental math skill that every student should have down. However, problems that many encounter in real and not all questions that are…

### Sketching Rational Functions

Sketching Rational Functions 630 630 Teaching Staff

Definitions: A rational function is defined as a function where both the numerator and denominator are polynomials.  A hole is a point where the function is undefined. An asymptote is…

### Finding the Equation of a y = mx + b Line

Finding the Equation of a y = mx + b Line 960 490 Teaching Staff

### Fractions: Adding, Subtracting, Multiplying, and Dividing

Fractions: Adding, Subtracting, Multiplying, and Dividing 360 236 Teaching Staff

### Math Review of Applications of Percents

Math Review of Applications of Percents 150 150 Deborah

Overview Percents are based on the decimal system and have many useful applications in business, sales, and finance. Other applications of percents include percent increase and decrease. Estimating Percentages Many…

### Math Review of Inequalities with More than One Step

Math Review of Inequalities with More than One Step 150 150 Deborah

Overview If an inequality contains more than one operation, it will take more than one step to solve it. Suppose that in order to solve an inequality, both multiplication and…

### Math Review of Inequalities

Math Review of Inequalities 150 150 Deborah

Overview While equations are statements that two quantities are equal, inequalities state that quantities are not equal. One side of the expression might be greater than the other side, or…