Eliminate the parameter t to find a Cartesian equation in the form x=f(y)

Question

x(t)=4t^2
y(t)=4+2t

Answer 1

t = (y-4)/2 from second equation
so
x = 4 [ (y-4)/2 ]^2

x = (y-4)^2

x = y^2 -8 y + 16