Answer:
See explanation
Step-by-step explanation:
a)
The rate of change of her earnings when the number of children increases from 1 to 4 is obtained as the slope of the straight line graph between 1 and 4
From;
y2-y1/x2 - x1, we have, 44 - 20/ 4 - 1 = 8 dollar per child
b)
The rate of change of her earning when the number of children that attend changes from six to seven;
y2-y1/x2 - x1, we have, 68 - 60/ 7 - 6 = 8 dollar per child
c) From the two calculations, the rate of change of Jasmine’s earnings remain the same in (a) and (b) above. This is because, the slope of a straight line graph remains constant throughout the line.
