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Square both sides and simplify to obtain the equation of the circle. The xintercepts are the xcoordinates of the points where the graph crosses the xaxis. Thus for these points the ycoordinate is zero. Thus, in the equation set y = 0 and solve for x. Similarly to find the yintercepts, set x = 0 in the equation and solve for x. On graph paper set up a coordinate system and use a compass to draw the circle with center (2,4) and radius 3. Look at the points on the graph where is crosses the x and ycoordinates. Do they agree with the intercepts you found? Cheers,  


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