I need help on question 6 and simple explanation please (8th grade algebra)

ANSWER
Linear function
EXPLANATION
6) To solve this, we have to observe the given data.
Notice that as each term comes, the circles are dropped by a specific factor:
Term 1: 16
Term 2: 8
Term 3: 4
Term 4: 2
Therefore, we see that the number of circles reduces by a certain factor which is ¹/ ₂.
Hence, there is a proportional relationship between the term and the number of circles.
Therefore, a proportional function will be used to model the pattern:
[tex]y=\frac{1}{2}x[/tex]This is also the form of a linear function without the constant. Hence, the answer is a linear function.