424.02  Finding and declaration of necessity.--It is hereby found and declared by the Legislature to be necessary to provide housing for families of low income and in providing for such housing, being now otherwise impossible, that provision be made by law for the investment of private and public funds at low interest rates, acquisition at fair prices, of adequate parcels of land, and the construction of new housing facilities under public supervision in accord with proper standards of sanitation and safety, at a cost which will permit the rental or sale at prices which families of low income can afford to pay, to effectuate which there are created and established the agencies and instrumentalities hereinafter prescribed which are declared to be the agencies and instrumentalities of the state for the purpose of attaining the ends herein recited, and their necessity in the public interest is hereby declared a matter of legislative determination.