4. list the ordered pairs in the relations on {1, 2, 3, 4} corresponding to these matrices (where the rows and columns correspond to the integers listed in increasing order). a) ⎡ ⎢ ⎢ ⎣ 1101 1010 0111 1011 ⎤ ⎥ ⎥ ⎦ b) ⎡ ⎢ ⎢ ⎣ 1110 0100 0011 1001 ⎤ ⎥ ⎥ ⎦ c) ⎡ ⎢ ⎢ ⎣ 0101 1010 0101 1 0 1 0 ⎤ ⎥ ⎥ ⎦ 5. how can the matrix representing a relation r

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?