1/2 x 5/8 = 20/8 = 5/2
3/5 x 5/8 = 600/40 = 15
3/8 x 2/5 = 240/40 = 6
Midpoint formula : (x1 + x2) / 2, (y1 + y2)/2
(-6,3)....x1 = -6 and y1 = 3
(4,-2)...x2 = 4 and y2 = -2
now sub
m = (-6 + 4) / 2, (3 - 2) / 2
m = (-2/2, 1/2)
m = (- 1, 0.5) <==
Answer:
A dot plot is like a histogram but it uses dots instead of bars. Like histogram, a dot plot also presents the frequency of data points. The dot plot as described by the problem is shown in the picture. A bell shape is drawn for a symmetrical data. From the choices, the answer is: It is symmetric and has no gaps. The other statements are wrong because the peak is at $5 or $6.
The process is equating,
a) take the two equations and equate them
0.25x + 0.58 = 1.5x - 5.4
(25x+58)/100 = (150x - 54)/100
25x + 58 = 150x - 54
150x - 25x. = 58+ 54
125x = 112
x = 125/112 is nearly 1.116
b) do the same thing ( the answer is 50 )