Algebra

posted by Krys

Mary is y years old.
Write an algebraic expression in terms of y for the age of
A) her brother, who is 4 years older.
B) her mother, who is 3 times as old.
C) her sister, who is 2 years younger.

  1. Ms. Sue

    y + 4
    3y
    y - 2

  2. Abigail

    y + 4
    3y
    y-2

    Think about it like this, if Mary had four brothers, she is Mary's age plus the age of 4 brothers, but we don't know it, so Y + 4 is good enough.

    3y, because Mary had a little lamb that was 3.

    And Y-2 because its her and 2 others who died in the car crash. Get it?

    No?

    Good.

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