Answer: (-4,9)
Step-by-step explanation:
The given equation models the position and range of a cellular phone tower :
[tex](x + 4)^2 + (y-9)^2 = 144[/tex]
Since the radiation of a phone tower radiates in a circular area where the position of the tower is the center of that circle.
The standard equation of a circle is given by :-
[tex](x-h)^2+(y-k)^2=r^2[/tex], here (h,k) is the center of the circle.
Now, comparing to the standard equation of the circle, the position of tower on the coordinate plane = (-4,9).
