Given 2 points on a graph what is the rate of the change

Given two points on the given graph (0,100) and (10,700) the rate of change is 60 km/hr.

Step-by-step explanation:

The graph given is a linear function and there are two points designated by blue dots at (0,100) and (10,700).  The rate of change represents the rate at which the distance is increasing over time.  So, to find the rate, you need to find the change in distance divided by the change in time for the given points.  In this case, we would take:  (700 - 100)/(10 - 0) = 600/10 = 60km/hr.  For this problem, Distance represents the dependent variable (y-axis) and Time represents the independent variable (x-axis).  

3.0

Step-by-step explanation:

If the ratio is boys to girls, in fraction form (ratio form) that's

When we set up the ratio using the numbers, we have to keep the boy stuff with the boy stuff on top, and the girl stuff with the girl stuff on bottom.  So the ratio with the given numbers is

Reducing that down to decimal form, since 12 is divisible by 4 evenly, would be 3.0