Question

Find the rule for (3,1) (6,2) (9,3) (12,4) (15,5)
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Answer 1

y =
`(1)/(3)` x

Explanation:

Compare the values of y with the values of x for each ordered pair

x y

3 1 → y = 3 ÷ 3

6 2 → y = 6 ÷ 3

9 3 → y = 9 ÷ 3 = 3

12 4 → y = 12 ÷ 3 = 4

15 5 → y = 15 ÷ 3 = 5

The y value in each case is the x value divided by 3

Hence rule is

y =
`(1)/(3)` x