Water Ripples. Log InorSign Up.. x 2+ y 2= a − 0,1, 2, 3,4 2 a > 0,1,2,3,4. 1. x −8 2+ y −5 2= a − .5,1.5,2.5,3.5,4.5 2 a > .5,1.5,2.5,3.5,4.5.
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