The transformation maps to where and . If the image curve has equation , what was the equation of the original curve?
Answer and explanation
Correct answer: A.
- Step 1: Replace and in : .
- Step 2: Subtract 4: .
- Step 3: Divide by : .
Answer
.
Why not the others: The option with changes the sign inside the bracket; applies the transformation instead of undoing it; the option ending in has the wrong sign on the constant.
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