Luke 22:9  KJV  "And they said unto him, Where wilt thou that we prepare?"

Interpretation based on the following study:  The Son moreover taught and shew forth to enlighten, unfolding in teaching to make known Himself what purpose and determination was prepared and ordained by God.

Greek:  oi de eipon auto pou theleis hetoimazomen

Definitions/Greek Strong's numbers:

3588-to:  the, which, who, the things, the Son, this, that, one, he

1161-de:  but, and, now, then, also, moreover, nevertheless, for, even

2036-epo:  to speak or say by word or writing, tell, command, appoint, ordain, bid, answer, bring word, call, grant, utter, pour out forth, shew forth, point out, teach, instruct, direct, Word, to flow, water, rain, to lay forth, relate in words, break silence, describe, name, put forth, bringing together of words, ask, inquiry, desire, beg, require, crave, call for, cry after, seek, search for, request, cry out after, discern, judge, determine, distinguish, make known, ascertain, enquire, declare, unfold in teaching, ask after, beseech, pray, intreat, requires an open heart to receive the message, grasp, get hold of, understand, to teach, to learn, need, enlighten, bring light, brighten, kindle, ignite, glow, shine forth, refine, be on fire, burn, mark, own, occupy, possess

846-autos:  self, alone, mine own, self same, this, -selves

4226-pou:  what, where, whither, at what place, somewhere, nearly, about, a certain place

2309-thelo:  determination, purpose, choice, decree, volition, will, inclination, desire, pleasure, what one wishes or has determined shall be done, commands, precepts, option, impulse, to choose or prefer, be inclined to, to be about, to delight in, would, have in mind, be resolved

2090-hetoimazo:  to prepare, provide, make ready absolutely, those things which are ordained by God, authority, preparations, firm, provision, ready, fit, foundation, things made ready, in readiness, close and near at hand, present

Definitions derived from:  The New Strong's Expanded Exhaustive Concordance of the Bible, red letter edition, Hebrew & Greek Dictionary, 2010 edition.  CWP Teacher edition Interlinear Bible.