You can represent values using variables. This can only be done with whole numbers.
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Variables. If you're talking about math.....
Suppose the equation is y = f(x) where f(x) is a function of x.On a coordinate grid, let the horizontal axis represent the x values and the vertical axis represent the y values. Select a set of value for x and calculate the corresponding values of y using the equation. Mark the point (x, y) on the graph. Repeat for other values of x. Join these points with a smooth curve to give you the required line.
Substitute the values of the variables into the inequality. If the inequality is true then they are a solution, if not, they are not.Substitute the values of the variables into the inequality. If the inequality is true then they are a solution, if not, they are not.Substitute the values of the variables into the inequality. If the inequality is true then they are a solution, if not, they are not.Substitute the values of the variables into the inequality. If the inequality is true then they are a solution, if not, they are not.
The letters at the end of the alphabet usually represent variables while the letters at the beginning of the alphabet usually represent constants. As you get into more and more difficult mathematics, those are not sufficient. Then you need to start using Greek, then Hebrew, then Old German, and finally Russian.
A single statement, using variables, can convey the same information as many, sometimes infinitely many, statements.