Delete images off of memory card

it has to have this option from the camera ...by delete the pictures and so...but if ya do not find any of this choice ...just plug it into the computer ( card reader ) or by the usb cable ...and command the card to be erased from there ...( right click and format)
but Im sure that you have the choice either to single picture remove ( one by one ) or multiple delete ...something like in any phone with camera