r
Restate the equation as A = 3.14r2.
The independent variable is the one you are given - in this case, 'r'.
The dependent variable is the one you have to work out (it depends on the other variable). In this case, A.
An equation can often be re-written so that the subject of the equation is changed. This makes it nonsense to define either variable as independent.
A dependent variable is usually on the side of the equation by itself. The independent variable usually has something being done to it. And, the dependent variable is usually written to the left of the equation.
The independent variable is the variable that you change and manipulate in an equation. This causes the dependant variable to change.
The dependent variable depends on the independent variable for its values as for example in the straight line equation: y = 2x+1 It is y that is the dependent variable and x the independent variable.
If there is an independent variable, then it will be on the x-axis. Of course, there need not be any independent variable.
The formula for calculating the change in the independent variable, delta x, in a mathematical function or equation is: delta x x2 - x1 Where x2 is the final value of the independent variable and x1 is the initial value of the independent variable.
The dependent variable is on the vertical y axis and the independent on the horizontal x axis In the equation for example y = 3x then y is dependent on the independent variable x
The dependent variable depends on the independent variable for its values as for example in the straight line equation y = 2x+6 whereas y is the dependent variable and x is the independent variable
3
Domain is the independent variable in an equation. It is what you put "in" the equation to get the Range.
x = 1 / y2 where: x is the dependent variable y is the independent variable
For example in the sraight line equation of y = 2x+6 it is y that is the dependent variable because its value is determined by the independent variable of x