Variable x is 7 more than variable y.

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Mathematics

Description

Variable x is 7 more than variable y. Variable x is also 1 less than y. Which of the following pairs of equations best models the relationship between x and y?

A   x = 1y, x = y + 7

B   x = y + 7, x = y − 1

Cy = x + 8, y = x − 1

y = 7x, y = x + 1

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Explanation & Answer

The answer is B x = y + 7, x = y − 1


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