Final answer:
To find f(-1) for the function f(x) = -3x + 3, substitute -1 for x which gives f(-1) = 6.
Step-by-step explanation:
The student is asking to find the value of the function f(x) at x = -1 when
f(x) = -3x + 3.
To do this, we substitute -1 for x into the function:
f(-1) = -3(-1) + 3
= 3 + 3
= 6.
Thus, the answer for the question is f(-1) equals 6.