Question 511606
Let z = a+bi, then


*[tex \LARGE |(a+bi) - 8 + 4i| = 9]


*[tex \LARGE |(a-8) + (b+4)i| = 9]


*[tex \LARGE (a-8)^2 + (b+4)^2 = 81]


All the z-values will lie on a circle with radius 9 and center (8,-4) or 8-4i.