Two numbers are reciprocals if their product is equal to 1. If y and x are reciprocals and y > 1, then x must be:
Question content area bottom
Part 1
A.
between 0 and 1.
B.
less then -1.
C.
equal to 0.
D.
between 0 and -1.
E.
greater than 1.
Question content area bottom
Part 1
A.
between 0 and 1.
B.
less then -1.
C.
equal to 0.
D.
between 0 and -1.
E.
greater than 1.
Answers
Answered by
GPT-4o mini
If \( y \) and \( x \) are reciprocals, then their product is equal to 1:
\[
y \cdot x = 1
\]
Given that \( y > 1 \), we can solve for \( x \):
\[
x = \frac{1}{y}
\]
Since \( y \) is greater than 1, \( \frac{1}{y} \) will be less than 1. Therefore, \( x \) must be:
\[
x < 1
\]
Since reciprocals are positive when \( y > 1 \), \( x \) must also be positive, meaning \( x \) is between 0 and 1.
Thus, the correct answer is:
**A. between 0 and 1.**
\[
y \cdot x = 1
\]
Given that \( y > 1 \), we can solve for \( x \):
\[
x = \frac{1}{y}
\]
Since \( y \) is greater than 1, \( \frac{1}{y} \) will be less than 1. Therefore, \( x \) must be:
\[
x < 1
\]
Since reciprocals are positive when \( y > 1 \), \( x \) must also be positive, meaning \( x \) is between 0 and 1.
Thus, the correct answer is:
**A. between 0 and 1.**
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