What? Is that two problems? I'll change my answer, give me my answer.
Answer:
mean absolute deviation
Step-by-step explanation:
The mean absolute deviation of a data set is the average distance between each data point and the mean. It gives us an idea about the variability in a data set since it is a measure of dispersion
5 because you have to divide -15 by -3 and yu get 5
Slope m=(y2-y1)/(x2-x1)
(x1,y1)=(-5,0)
(x2,y2)=(0,19)
m=19-0/0-(-5)
m=19/5=3.8
Slope is 3.8
Good luck.
