What is the output when the input is 4 in the number machine?
GCSE Secondary Maths Age 13-17 - Number: Number machines - Explained
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Mathematics, Information Technology (IT), Architecture
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10th - 12th Grade
•
Hard
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The video tutorial explains a number machine that multiplies an input by 3 and subtracts 4 to produce an output. It covers three parts: calculating the output for a given input, reversing the process to find the input for a given output, and finding an input where the input and output are equal. The tutorial uses examples and algebraic methods to solve these problems, emphasizing understanding of input-output machines and reversing operations.
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5 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
How do you find the input when the output is 11?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain the process of reversing the operations in the number machine.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Show that there is a value of the input for which the input and the output are the same.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What value of x satisfies the equation 3x - 4 = x?
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