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Linear Equations In Real World

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I need to show a linear equation and explain what it represents.
I need to state what the "x" and "Y" in equation represents
I have to be able to evaluate the equation for at least two variables and provide reference where you got the equation from.
Part 2: Using the Library, web resources, and/or other materials, find a real-life application of a linear function. State the application, give the equation of the linear function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the corresponding y for each. State, in words, what each x and y means in terms of your real-life application. Please see the following example. Do not use any version of this example in your own post.

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Solution Summary

Both parts of this question have been answered giving examples and illustrations.

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Part 1:
A linear equation is of the form y = mx + b
Here, x is the independent variable which can take different values. Y is the dependent variable since its value depends upon the value assigned to x
m is the slope or ...

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