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Tangent planes and linear approximation Quiz: answer key

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#AnswerLevelSolution
1z = 2x + 4y − 5EasySolved step by step
2z = 3x + 2y − 6EasySolved step by step
3z = −2x − 2y + 6EasySolved step by step
4z = 4x − 2y − 3MediumSolved step by step
5z = 4x − 2y − 3MediumSolved step by step
6z = 3x + y − 1MediumSolved step by step
7z = 4x − 4y + 8MediumSolved step by step
8z = 4x + 4y − 8HarderSolved step by step
9z = 3x + 2y − 6HarderSolved step by step
10z = 12x − 2y − 15HarderSolved step by step

Grade

Count your right answers and divide by the number of questions: A 90% or more, B 80%, C 70%, D 60%, F below 60%.