SOLUTION: based on a set of x y values calculate x or y based on a given x or y value

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Question 732601: based on a set of x y values calculate x or y based on a given x or y value
Answer by solver91311(24713) About Me  (Show Source):
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I think you are saying that if you are given a pair of ordered pairs and a single coordinate (either or ) of a point on the same line that passes through the two given points, find the other coordinate.

Use the two-point form of an equation of a line:



where and are the coordinates of the given points.

Once you have substituted the known values, solve the equation for the remaining variable.

John

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