Question #b62d0

1 Answer
Bilal N.
Jan 31, 2018

#x^2#+ #y^2#=170 and radius=#sqrt(170)#

Explanation:

The formula for a circle is #(x-h)^2+(y-k)^2=r^2# , where (h,k) is the coordinates for the center, and r is the radius. To find the radius just find the distance between the point (7,-11) to (0,0) using distance formula or Pythagorean theorem to get #sqrt(170)#, then plug that into the circle formula.

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