Which set of ordered pairs represents a function? Answer Multiple Choice Answers left curly bracket, left parenthesis, $6,$ comma, minus, $8,$ right parenthesis, comma, left parenthesis, $2,$ comma, minus, $2,$ right parenthesis, comma, left parenthesis, $6,$ comma, minus, $1,$ right parenthesis, comma, left parenthesis, $8,$ comma, minus, $7,$ right parenthesis, right curly bracket$\{(6,8),(2,2),(6,1),(8,7)\}$ left curly bracket, left parenthesis, minus, $7,$ comma, minus, $8,$ right parenthesis, comma, left parenthesis, minus, $3,$ comma, $9,$ right parenthesis, comma, left parenthesis, $7,$ comma, $4,$ right parenthesis, comma, left parenthesis, minus, $1,$ comma, $4,$ right parenthesis, right curly bracket$\{(7,8),(3,9),(7,4),(1,4)\}$ left curly bracket, left parenthesis, $1,$ comma, minus, $2,$ right parenthesis, comma, left parenthesis, minus, $6,$ comma, $2,$ right parenthesis, comma, left parenthesis, $5,$ comma, $0,$ right parenthesis, comma, left parenthesis, $1,$ comma, $6,$ right parenthesis, right curly bracket$\{(1,2),(6,2),(5,0),(1,6)\}$ left curly bracket, left parenthesis, $3,$ comma, $8,$ right parenthesis, comma, left parenthesis, $3,$ comma, $6,$ right parenthesis, comma, left parenthesis, $8,$ comma, minus, $6,$ right parenthesis, comma, left parenthesis, $1,$ comma, minus, $7,$ right parenthesis, right curly bracket$\{(3,8),(3,6),(8,6),(1,7)\}$