Piecewise functions with graphs and points of discontinuity identified.
Graphs of two piecewise functions on coordinate planes. First function: f(x) = x+5 for x < -2, and f(x) = -4 for x ≥ -2. Second function: f(x) = 2x+1 for x < 1, and f(x) = -2x+3 for x ≥ 1. Both graphs show discontinuities at the boundary points.