Question

ces - 8th grade > find the rule: word problems ysh

sasha and her little brother, jake, just found out who their teachers will be next year. jake really wanted to be in sashas class. she explained to him that because they are different ages, they will always be in different grades. the table below shows sashas grade level, s, based on jakes grade level, j.

input (j) output (s)
1 4
2 5
3 6
4 7

write an equation that describes the relationship between s and j.

s =

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work it out
not feeling ready yet? these can help:
input/output tables: find the rule (83) compare patterns

Explanation:

Step1: Calculate difference of s-j

For each pair:
$4-1=3$, $5-2=3$, $6-3=3$, $7-4=3$

Step2: Rearrange to solve for s

The constant difference means $s = j + 3$

Answer:

$s = j + 3$