Given f(x) = –4x – 4, find f(a – 4).
F(x)= -4x- (a-4)-4
= -4a -4 -4
= a-12
am i getting this yet?
You made a small mistake in your calculation. Let's go through the steps again to find f(a - 4).
Given f(x) = -4x - 4, we want to find f(a - 4).
To do this, we substitute (a - 4) in place of x in the equation:
f(a - 4) = -4(a - 4) - 4
Now we simplify:
f(a - 4) = -4a + 16 - 4
Combine like terms:
f(a - 4) = -4a + 12
So the correct simplified form is f(a - 4) = -4a + 12.
You made a small mistake in your calculation where you wrote f(x) = -4x - (a-4) - 4. Notice that the negative sign only affects the term directly following it, which is (a - 4), and not the entire expression.