Describe the advantages you see in using a rule for a function rather than listing function values in a table.

Using a rule is direct and not time wasting, which is not the case for listing functions

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)