Answer:
-5
Step-by-step explanation:
considering they are counting in whole numbers it should be -5
x^2+y^2=16
x^2+y^2=r^2 is the mother function of the equation of a circle centered at r with radius r
since r is defined to be 4 and 4^2 is 16 therefore, the equation would then be
hope this will help you.
