Here is an addition sentence.
2 answers:
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You're very close. However, the less steep line should go through (4,7) and not some point slightly above that location. Also, the shaded region should be above both dashed lines at the same time. So you won't include the portion that I've marked in blue (see attached). Other than that, it looks great.
<u>Answer</u><u>:</u>
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Hope you could get an idea from here.
Doubt clarification - use comment section.