Answer
$(a)$ See the image below.
$(b)$ As the distance increases the gravitational attraction decreases and vice versa, as the distance decreases the gravitational attraction increases.
Work Step by Step
$(a)$ We can simply input the function in a graphing calculator and indicate the given range.
See the image above for a result.
$(b)$ As the distance increases the gravitational attraction decreases and vice versa, as the distance decreases the gravitational attraction increases.
Also note, that the gravitational attraction never gets $0$ when the distance increases and it gets infinitely huge when the distance decreases.
