f(x) = |x - 3| - |x - 1|
(54, -2)
(-92, 2)
(88, -2)
(74, -2)
(82, -2)
(86, -2)
(80, -2)
(66, -2)
(-40, 2)
(42, -2)
(14, -2)
(-38, 2)
(-2, 2)
(-100, 2)
(98, -2)
(38, -2)
(-70, 2)
(-4, 2)
(-62, 2)
(-98, 2)
(46, -2)
(-30, 2)
(70, -2)
(52, -2)
(60, -2)
(10, -2)
(-36, 2)
(100, -2)
(-86, 2)
(8, -2)
(32, -2)
(-54, 2)
(-46, 2)
(-22, 2)
(-76, 2)
(-44, 2)
(-66, 2)
(30, -2)
(12, -2)
(-10, 2)
(-64, 2)
(-6, 2)
(-32, 2)
(-16, 2)
(-84, 2)
(-34, 2)
(34, -2)
(-94, 2)
(58, -2)
(-82, 2)
(-60, 2)
(20, -2)
(56, -2)
(90, -2)
(64, -2)
(72, -2)
(28, -2)
(-18, 2)
(0, 2)
(-74, 2)
(6, -2)
(-28, 2)
(96, -2)
(76, -2)
(44, -2)
(-56, 2)
(-78, 2)
(-26, 2)
(16, -2)
(-14, 2)
(50, -2)
(-90, 2)
(-12, 2)
(36, -2)
(-20, 2)
(26, -2)
(62, -2)
(18, -2)
(24, -2)
(22, -2)
(-72, 2)
(-68, 2)
(68, -2)
(-52, 2)
(-50, 2)
(-80, 2)
(4, -2)
(-58, 2)
(94, -2)
(-88, 2)
(84, -2)
(-48, 2)
(92, -2)
(-8, 2)
(48, -2)
(-96, 2)
(78, -2)
(-42, 2)
(40, -2)
(-24, 2)