First of what does a equal?
Answer:
f(x) = -3x +2 to find f(4) you plug in the value of x=4 in the function
f(4) = -3(4) +2
= - 12 +2
=- 8
Hope it is helpful to you
<span>Simplifying
z + 18 = y
Reorder the terms:
18 + z = y
Solving
18 + z = y
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + z = -18 + y
Combine like terms: 18 + -18 = 0
0 + z = -18 + y
z = -18 + y
Simplifying
z = -18 + y</span>