{(0, 0), (2, 0.5), (4, 1), (3, 1.5), (4,2), (5, 1.5), (6, 8)} Which ordered pair can be removed to make this relation a function?

Why would removing this ordered pair make the relation a function?

Help me please

Answer question above and explain each step : )

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Analyze the graph of the cube root function shown on the right to determine the transformations of the parent function. then, determine the values of a, h, and k in the general equation. y=a3x-h+k h= . k= done 000000l o 7 of 8