Both the points have a coordinate where y is -1, so the equation is simply -1
y=-1
however if you wanted to really show the working out, it looks like this:
y=mx+c
m=change in y/change in x
m=(-1-1)/(-5+0)=0
subsitute one of the coordinates into y=mx+c
-1=0+c
c=-1
so then y=-1
The answer is 0 because any number elevated to 0 is 0
The median of the data would be (20+25)/2, which is 45/2 = 22.5.
The first quartile (Q1), the middle number between the smallest number and the median of the data set, is 9.
The second quartile (Q2) is the median of the data. (22.5)
The third quartile (Q3) the middle value between the median and the highest value of the data, is 35.
Hope this helped!
