Here we have unlabeled graphs of {{MATH_233}}, {{MATH_234}}, and {{MATH_235}}: {{CMD_236}} {{ENV_237}} {{CMD_238}} Identify each curve above as a graph of {{MATH_239}}, {{MATH_240}}, or {{MATH_241}}. {{CMD_242}} Here we see three curves, {{MATH_243}}, {{MATH_244}}, and {{MATH_245}}. Since {{MATH_246}} is {{CMD_247}}{{CMD_248}}positive{{CMD_249}}{{CMD_250}}negative{{CMD_251}}{{CMD_252}}increasing{{CMD_253}}{{CMD_254}}decreasing{{CMD_255}}{{CMD_256}} when {{MATH_257}} is positive and {{CMD_258}}{{CMD_259}}positive{{CMD_260}}{{CMD_261}}negative{{CMD_262}}{{CMD_263}}increasing{{CMD_264}}{{CMD_265}}decreasing{{CMD_266}}{{CMD_267}} when {{MATH_268}} is negative, we see {{MATH_269}} Since {{MATH_270}} is increasing when {{MATH_271}} is {{CMD_272}}{{CMD_273}}positive{{CMD_274}}{{CMD_275}}negative{{CMD_276}}{{CMD_277}}increasing{{CMD_278}}{{CMD_279}}decreasing{{CMD_280}}{{CMD_281}} and decreasing when {{MATH_282}} is {{CMD_283}}{{CMD_284}}positive{{CMD_285}}{{CMD_286}}negative{{CMD_287}}{{CMD_288}}increasing{{CMD_289}}{{CMD_290}}decreasing{{CMD_291}}{{CMD_292}}, we see {{MATH_293}} Hence {{MATH_294}}, {{MATH_295}}, and {{MATH_296}}. {{CMD_297}} {{CMD_298}}