4.A.1.2

Describe the single operation rule for a pattern from an input/output table or function machine involving any operation of a whole number.

Example Problems
Lucia made this table to show the relationship between her age and her cousin Maria's age.

Lucia's age (years)891011
Maria's age (years)14151617


Lucia wants an equation she can use to find how old she is,
, based on her cousin Maria's age, .

Write Lucia's equation.
Ari and Bo are playing a game where their total points increase by one each round. The table shows their scores:

Round1234
Bo19202122
Ari27282930


Ari wants an equation she can use to find her score,
, when Bo's score is .

Write
Ari's equation.
José made this table to show the relationship between his age and his cousin Mario's age:

José's age (years)10111213
Mario's age (years)3456


José wants an
equation he can use to find his own age given Mario's age .

Write José's
equation.
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