Find d 2 y over d x squared for the curve given by x = 2t + 5 and y equals 3 times t over 2

Question

Find  for the curve given by x = 2t + 5 and  

A
B
C	1
D	0

Answer 1

dy/dx = dy/dt/(dx/dt)

dx/dt = 2

dy/dt = 3/2

dy/dx = (3/2)/2 = 3/4

d²y/dx² = 0 Answer D)