Problem 120 of 7
Compare internal and external partition for point I is such that the ratio AI:IB is 3:-1.
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recognize point between endpoints versus outside.
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Internal points lie between endpoints; external points lie on the same line outside the segment.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Determine whether the point is between endpoints or beyond one endpoint.
2. Relate fraction between 0 and 1 to internal partition.
3. Relate fraction less than 0 or greater than 1 to external partition.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Calling an outside collinear point an internal partition.