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A demo that shows how to substitute possible x-y ordered pairs into an equation to find out whether they create a true statement, determining which are solutions and which are not.
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Given a value for the variable, here a quadratic expression is then calculated with that given value put in place of the variable.
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Expanding a numberical example and then doing the repeated multiplication.
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A quick demo about plugging in given values for variables and calculating a number result.
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This shows how to enter a value into a function to get a result for something like depreciation of value over time for a purchased item.
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For an equation with f(x) equal to a rational expression, this shows how to write the substitution and simplification when putting in a particular value for x.
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Evaluating a variable expression when you know specific number values for each varible.
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