Rational numbers m and n are plotted on the number line.

n - m is positive

Step-by-step explanation:

Given

m and n on number line

Required

Which is true

From the attachment, we have:

and

Since: the above inequalities are true, then:

(a) is true

There is no need to test other options; since (a) is true

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

you just switch the numbers basically so it would be 3/17