Question 975746
1. Find the equation of the families of circles of radius 1 and centers on the line y=2x
{{{(x - h)^2 + (y - 2h)^2 = 1}}}
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2. Find the equation of the families of circles of radius 1 and centers on the line y=2x+3 
{{{(x - h)^2 + (y - (2h+3))^2 = 1}}}