Answer:
f (x) = -8x-3
Step-by-step explanation:
To rewrite the equation as a function of x, first isolate y on one side of the equation.
56x + 7y = -21
56x + 7y = -21
7y = -5x - 21
y = -8x -3
Then, substitute f(x) for y in the equation. This leaves the following as the correct answer.
f (x) = -8x-3
