Question

Barty has 70 balloons, and he will pop four of them every second. Fill in the missing information on the table, it relates b, the number of balloons he has left, to t, the time in seconds. Then, write a sentence answering why this is or isn't a proportional relationship.

Answer 1

T b
0 70
1 66
2 62
3 58
4 54

This is not a proportional relationship because the ratios are not equivalent.
1/66 (t/b) is not equivalent to 2/62 (t/b).