Algebra-1

According to the provided graph, we can see that the step function consists of three parts:

f(x) = 4, when -4 ≤ x ≤ -2,
f(x) = 2, when -2 < x < 2,
f(x) = -3, when 2 ≤ x ≤ 4.

To determine the value of y when x = 0, ...