Takeoff was rejected when an EICAS message for #1 ENG FUEL LOW PRESS displayed. The electric fuel pump switch was found in the incorrect off position.

Narrative

All checklists were read and had been complied with; to my knowledge; per EMB AOM volume 1. At approximately 75 KTS during takeoff roll; the Captain stated ABORT; ABORT; ABORT; and a low speed abort procedure was executed. An EICAS message said #1 ENG FUEL LOW PRESS; which is what prompted the Captain to issue the abort. However; there was never an oral caution; or master caution warning associated with the message; the Captain just so happened to see the message during the takeoff roll. After exiting the runway; we assessed that the #1 engine electric fuel pump was off; which explained the associated message. We turned the fuel pump on and taxied back to the end of the runway and prepared for takeoff. We did have to wait approximately ten minutes for the brakes to return into the green range for takeoff. The rest of the flight was non eventful.Fuel pumps are an item on the Engine Start Checklist. I read the checklist; and the Captain responded as normal. It is now evident that the #1 engine fuel pump was not turned on during this checklist; even though the Captain responded that both were on. As a crewmember; I failed to double check that the Captain's responses matched the actual switch configuration for the #1 fuel pump.