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Course: Algebra (all content) > Unit 7

Lesson 30: Two-variable functions
Math
Algebra (all content)
Functions
Two-variable functions
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New operator definitions 2

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Problem

The operations △ and ⊕ are defined as follows:
  • x△y=7y+2
  • x⊕y=3x−y
Find 2⊕(1△−2).
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi