Which graph represents the piecewise-defined function f(x) = startlayout enlarged left-brace 1st row 1st column negative x + 4, 2nd column 0 less-than-or-equal-to x less-than 3 2nd row 1st column 6, 2nd column x greater-than-or-equal-to 3 endlayout?
on a coordinate plane, a piecewise function has 2 lines. the first line has an open circle at (3, 6), continues horizontally to the left at y equals 6 with an arrow instead of an endpoint. the second line has a closed circle at (3, 0) and continues up to an open circle at (5, 3).