OpenStudy9
  • OpenStudy9
Need some help with this coordinate geometry problem! Will medal+fan! Circle K lies In the x-y coordinate plane, has its center at (-2,5), and passes through the point (1,1). Which of the following points does circle K NOT pass through? A. (1,9) B.(-5,9) C.(-5,1) D.(-2,0) E. (0,5)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Nnesha
  • Nnesha
general form of circle \[\large\rm (x-h)^2+(y-k)^2=r^2\] where (h,k) is the center and (x,y) the point and r is the radius so first substitute (x,y) for given point and (h,k) for (-2,5) then solve for r
OpenStudy9
  • OpenStudy9
(1+2)^2+(1-5)^2
OpenStudy9
  • OpenStudy9
radius is 5, right?

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Nnesha
  • Nnesha
correct now substitute (h,k) with center and r with 5 then test each option substitute (x,y) for each option and see which one give you the true statement
Nnesha
  • Nnesha
actually u have to find which one NOT true
OpenStudy9
  • OpenStudy9
The answer is E
OpenStudy9
  • OpenStudy9
Right?
Nnesha
  • Nnesha
why do you think its E ? post the work :=))
OpenStudy9
  • OpenStudy9
Becuase: (0+2)^2+(5-5)^2=4, BUT THE RADIUS SQUARED NEEDS TO BE 25
OpenStudy9
  • OpenStudy9
right?
Nnesha
  • Nnesha
YES lel
Nnesha
  • Nnesha
good work!

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