Question

find the parametric equation for (x+9)^2 + (y-4)^2 = 49

Answer 1

In general for parametric equations

\[x=x _{0}+acos(t) \] and \[y = y _{0}+asin(t)\] so for your equation
x=-9+7cos(t) and y=4+7sin(t).

Hope that helps