Question

d^2y/dx^2 = 0, y'(0) = 2, y(0) = 0

Answer 1

dy/dx = c where c is some constant

Answer 2

y'(0) = 2, which means that
dy/dx = 2

Answer 3

y = Integral(2 dx) = 2x+C where C is another constant

Answer 4

y(0) = 0

0=2*0+C

Answer 5

C = 0,
y=2x

Answer 6

how is 2 c

Answer 7

assuming your question was to find y. Next time it would be helpful to actually post the question.

Answer 8

y'(0) = 2
y'(x) = C, there is no x, therefore C = 2