Asked in Geometry
Geometry

How do you figure out the length of a line on a graph?

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Answer

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Wiki User
05/12/2008

From point A to point B

You need the X and Y value of both point A and B

Formula =

Distance = Square root of [(x1 + x2)2 + (y1 + y2)2]

So therefore given points (1:2) and (5:-6)

Square root of (1 - 5)squared + (2 + 6)squared

=Square root of -4 squared + 8 squared

=Square root of 16 + 64

=Square root of 80

This can be your answer but you should go a step further

=Square root of 80

=Square root of 16 * 5

=4*Square root of 5