Answer:
0.24
Explanation:
Given the points (10,2.4) (15, 3.6) (17.5, 4.2)
The unit rate is the slope of the line joining any of the two points.
Using points (10,2.4) and (15, 3.6)

=0.24
Using points (10,2.4) and (17.5, 4.2)

Therefore, the unit rate for each point is 0.24