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Consider the set of all points (x,y) in the coordinate plane for which one of the coordinates is exactly twice the other. If we were to plot all such points, into how many regions would the resulting graph split up the plane?

 Mar 3, 2019
 #1
avatar+100546 
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We would have these  lines

 

y = 2x

x = 2y

 

Look at the graph here : https://www.desmos.com/calculator/szklgrm0br

 

There are 4 regions

 

cool cool cool

 Mar 3, 2019

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