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AlgebraEasyTable that could be a linear function

Algebra practice question

Each table below gives the values of y for x = 0, 1, and 2. Which table could represent a linear function?

  1. A. y = 5, 7, 9Correct
  2. B. y = 1, 2, 4
  3. C. y = 0, 1, 4
  4. D. y = 3, 3, 4

Answer: A. y = 5, 7, 9

The values rise by the same amount, 2, for each step of 1 in x.

Why the other answers are wrong

B. y = 1, 2, 4
The steps are 1 and then 2.
C. y = 0, 1, 4
The steps are 1 and then 3.
D. y = 3, 3, 4
The steps are 0 and then 1.

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