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# Algebra

## Geometric sequences and sums. Infinite geometric series

A sequence of numbers where each term after the first is got by multiplying the previous one by a fixed number. That number is called the common ratio.

## Arithmetic sequences and sums

A sequence of numbers such that the difference between the consecutive terms is a constant is called arithmetic progression or arithmetic sequence.

## Factoring rules in algebra

Factoring is the math process of finding the factors. It can be called like finding what you have to multiply together to get an previous expression.

## Finding equation of the line that is parallel to given one

Find the equation of the line that is parallel to $y = 4x - 1$ and passes though the point $(7,30)$ ?

## How to find slope, when two function points is given?

Find the slope of the function, when points $A(1,3)$ and $B(7,12)$ belongs to this function?

## Finding equation of the line that passes though the two points

Find the equation of the line that passes though the points $(-2,5)$ and $(8,15)$ ?

## Drawing graph of the exponential function

How to draw graph of exponential function? In this topic we will teach you exponential functions drawing technique.

## Basic laws of calculating exponents

Get to know the math exponents, their basic properties and review some examples of using that.

## Drawing graph of the quadratic equation

How to draw graph of quadratic equation? In this topic we will teach you quadratic functions drawing technique.

The absolute value $|a|$ of number $a$ may be thought of as its distance from zero. Definition of absolute value: