Which of the following equations could be the trend line of variables that have a negative correlation?

y = -2x + 1
y=1/2x+1
y = 2x - 1

y=-2x+1

Step-by-step explanation:

Two variables x and y are said to be negatively correlated if:

y=mx+c and m is negative

Here, y = -2x + 1  

m=-2

Hence, x and y are negatively correlated

y=1/2x+1

m=1/2

Hence, x and y are not negatively correlated

y = 2x - 1

m=2

Hence, x and y are not negatively correlated

Hence, correct answer is:

y=-2x+1

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation:

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100