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## Homework Statement

What's the difference between the two equations for a plane?

This question is somewhat related to my other, overarching question here: https://www.physicsforums.com/threads/i-am-confused-about-how-multivariable-calc-works.798798/

## Homework Equations

## a(x - x_0) + b(y - y_0) + c(z - z_0) = 0 ##

and

## z - z_0 = f_x (x_0, y_0)(x-x_0) + f_y (x_0, y_0)(y-y_0) ##

## The Attempt at a Solution

I'm not sure what the relationship between these two equations are. Thanks everyone.

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