The first thing you need to do is add and then subtract
<span>(2, 4) and (−8, 84)
see the graph</span>
N - 2 = 10n + 4/2
-2 = 9n + 4/2
-4/4 = 9n
-1 = 9n
-9 = n
N is -9.
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Answer:
the radius is 10 since 10 plus ten is 20