my topic is "Which fast food is the main cuase of obesity in america?" my choices are french fries,pizza,hamburger,%26amp;chicken.|||well at first u have to knw wat is variable ....
a variable is a value that can b varied with or without respect of the term/equation
when it depends its dependant variable
and
when variable doesnt depend on equation then its independant variable, and it can also be called constant with respect to that equation ...
constant is a value that doest depent on equation ...
eg: 4x+5y=0
here x and y are variables while 4 nd 5 are constants
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