Is the relation a function? Why or why not?
{(3,-1), (3,0), (-3, 4), (3, 8)}
No; three range values exist for domain value 3.
No; the relation passes the vertical line test.
Yes; only one range value exists for each domain value.
Yes; three range values exist for domain value 3.

No; three range values exist for domain value 3.

Step-by-step explanation:

To be a function, every input should have a unique output

there will be 35 boys in each team. : )

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".