Algebra practice question

Answer: 9

Going back 4 units in x adds 8: f(0) = 1 + 8 = 9.

Common wrong answers

If you answered 1

1 is f(4).

If you answered -7

−7 subtracts 8 instead of adding.

If you answered -1

−1 uses slope −2 for one step only, going the wrong way.

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