Answer:
Assuming a vertical number line:
- Plot the point at 7/10 above the origin, between 0 and 1.
- Plot the opposite of 7/10 by reflecting it across the origin to the point at -7/10 below the origin, between 0 and -1.
- Label the point at 7/10 as "7/10" and the point at -7/10 as "-7/10".
The number line would look like this:
1
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| 7/10
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0
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| -7/10
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-1