We are given a linear equation y = (1/2)x + 1 and asked to find the value of x when y = 5.
Substituting y = 5 into the equation, we get:
5 = (1/2)x + 1
Subtracting 1 from both sides, we get:
4 = (1/2)x
Multiplying both sides by 2, we get:
8 = x
Therefore, when y = 5, x = 8.
Hence, the answer is (a) 8.