Question

Find f(-1) for the

piece-wise function.
f(x) = {
-2x+1
-x+ 2
if x ≤ 1
if x > 1
f(-1) = [?]

Answer 1

f(-1) = 3

Explanation:

Notice that the first part of the piecewise function includes x=-1, so we need to evaluate f(-1) with the function f(x)=-2x+1:

f(-1) = -2(-1) + 1 = 2 + 1 = 3