# Changing variables in mathematics?

In mathematics, a change of variables is a basic technique used to simplify problems in which the original variables are replaced with functions of other variables. The intent is that when expressed in new variables, the problem may become simpler, or equivalent to a better understood problem.

## How do you change a variable?

Just defined by 2x minus y equals zero and one of them is a portion of the line defined by 2x plus y equals two. So why don't you do this make sure you use this change of variables.

## How do you change variables in an equation?

RULE #2: to move or cancel a quantity or variable on one side of the equation, perform the “opposite” operation with it on both sides of the equation. For example if you had g-1=w and wanted to isolate g, add 1 to both sides (g-1+1 = w+1).

## What is it called when you change a variable?

An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the onethat is changed by the scientist.

## What is variable in math algebra?

variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).