I am useing my last pionts plez answer truely, 100 pionts

7. Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(–2, –4), (–1, –4), (3, –4), (6, –4)} (1 point)

8. Identify the mapping diagram that represents the relation and determine whether the relation is a function.

{(-8,-6),(-5,2)(-8,1)(7,3)}


9. The function b(n) = 12n represents the number of baseballs b(n) that are needed for n games. How many baseballs are needed for 15 games? (1 point)
27 baseballs
150 baseballs
180 baseballs
200 baseballs

10. Tell whether the sequence is arithmetic. If it is, what is the common difference?

2, 7, 13, 20, . . . (1 point)
yes; 5
yes; 6
yes; 2
no