1) What is a function? a) a relationship between polynomials b) a relationship between elements of two sets c) a relationship between two dependent variables 2) what do we call those sets? a) Domain and codomain b) Morphism and homomorphism c) Range and image d) Injective and surjective 3) The variables are called... a) X: Independent Y: Dependent b) X: Dependent Y: Independent c) Y: Exclusive X: Inclusive d) Y: Direct X: Indirect e) None is correct 4) Functions are often described as a ... a) machine in a closed box b) something that cuts things in half c) relationship between two machines d) machine in a box that is open on four ends e) machine in a box that is open on two ends f) relationship between two boxes 5) In the example: f (-2) = (-2)2 + 3 we have the ordered pair ... a) (2 , 5) b) (-2 , 1) c) (2, 7) d) (5, -2) e) (7, 2) f) (-2, 7) 6) In the example: f (5) = (2 - (5)2 ) + (5)1 we have the ordered pair ... a) (10 , 5) b) (-5 , 2) c) (5 , -18) d) (5 , 18) e) (5 , 32) f) (32 , 5) 7) If x = 4 --> f(x) = (5 + x) . 3 - 1  a) (26 , 4) b) (4 , 26) c) (4 , 28) d) (28 , 4) e) (27 , 4) f) (4 , 27)

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