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Determining negative slope from a graph

👉 Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with ...
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How to write the equation of a line perpendicular to another through a point

👉 Learn how to write the equation of a line that is perpendicular to a given line. The equation of a line is such that its highest exponent on its variable(s) is 1. (i.e. there are no exponents in ...