Graph 1.7, -0.3, and 0.5 and their opposites on the number line.

A marine biologist collects coral species from the bottom of a coral reef. The biologist swims to depths of:
below sea level.
Represent these depths as rational numbers.
Graph and label these depths and their opposites on the number line.

On Friday, the value of one stock changed by -$2.75, and the value of a second stock changed by $2.75. How can you use a number line to show that these values are opposites?
Find the opposite and absolute value of each number.