Final answer:
The value of x in the function f(x)= 1/2x-2 for the point (z,-8) is -12.
Step-by-step explanation:
The point (z,-8) represents an ordered pair on the function f(x)= 1/2x-2. To find the value of x, we can substitute the given y-coordinate of -8 and solve for x:
-8 = 1/2x-2
Adding 2 to both sides, we get:
-6 = 1/2x
Multiplying both sides by 2, we get:
-12 = x
Therefore, the value of x is -12. So, the answer is B. = -12.