which of the following equation(s) is the solution to the differential equation if y=(7/3)when x=1?( lk below)

Question

A. y = 2x + (1/3)
B. y = x^2 + (4/3)
C. y = (1/3)x^3 + 2
D. y = lnx + (7/3)
E. y = cosx + (4/3)

Answer 1

A, B, C, and D

y = 2(1) + 1/3
y = 2 + 1/3
y = 7/3

y = 1^2 + 4/3
y = 1 + 4/3
y = 7/3

y = (1/3)* 1^3 + 2
y = 1/3 = 2
y = 7/3

y = ln(1) + 7/3
y = 0 + 7/3
y = 7/3

y = cos(1) + 4/3
y = 0 + 4/3
y = 4/3 (does not work)

Answer 2

A