Remark
Right away when the x value of one of the points = 0 then you have the y intercept.
-1 = 0*m + b
b = - 1
So far what you have is y = mx - 1. Now use the two points to get the slope (m)
x1 = 0
x2 = -1
y1 = -1
y2 = - 3
m = (y2 - y1) / (x2 - x1)
m = (-3 - - 1) / (-1 - 0)
m = -2/-1 = 2
The answer to the equation is
y = 2x - 1
Note
The best way to check this is with a graph. The two given points are marked on the graph. The upper one is (0 , -1). The lower one is (-1 , -3). The slope must be correct.
Answer: Mode
<u>Step-by-step explanation:</u>
The given data set is: 10, 10, 12, 13, 15
Mean is the average - find the sum of the data set and divide by the number of terms in the set:
Mean = 12
Median is the middle term (when the data set is ordered from least to greatest).
Median = 12
Mode is the term that appears the most.
Mode = 10
Since you want to show that the prices are low, you would choose the lowest value. 10 is lower than 12, so the Mode is lower than either the Mean or the Median.
