The idea
The transformation that trips everyone is the horizontal one: f(x + 3) moves the graph LEFT, not right, because the input has to be 3 smaller to give the same output.
Lesson
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Questions (4)
| Question | Type | Difficulty | Drift | Accuracy |
|---|---|---|---|---|
| If f(x) = 2x² − 3, what is f(−2)? | numeric | Easy -1.20 | — | — (0) |
| The graph of y = f(x) is shifted to produce y = f(x + 3). Which way does it move? | mcq | Moderate 0.20 | — | — (0) |
| State the domain of f(x) = √(x − 4) / (x − 9) and explain each restriction. | short | Hard 0.80 | — | — (0) |
| If f(x) = 3x − 1 and g(x) = x², what is (f ∘ g)(2) — that is, f(g(2))? | mcq | Hard 1.30 | — | — (0) |