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Meaning of X in Slope-Point Form of a Linear Equation

The linear equation is y-2.68=m(x-2006).

The slope m=(2.68-1.80)/(2006-1975)=0.0284, therefore the formula of the mean average of gas is:

y=0.0284x-54.2904 (slope-intercept form)

Can you tell me what the x represents???
Thank you

Solution Preview

x is the independent variable, whereas y is the dependent ...

Solution Summary

Solution briefly explains what x is in a slope-form equation with a couple examples to illustrate how it and y move together.