Answer:
The correct choice is A.
Step-by-step explanation:
You plug in the values of x into the function and work out value of y:-
x=0, y = 1/2(0 - 8) = -4
x = 1, y = 1/2(1 - 8) = -3.5
To work out the x values substitute for y:-
when y = -2 ,
-2 = 1/2(x-8)
-2 = 1/2x - 4
1/2x = -2 + 4
x = ( -2 + 4) / 1/2
= 2 / 1/2
= 4
when y = -8,
-8 = 1/2 (x - 8)
-8 = 1/2 x - 4
1/2x = -4
x = -8
