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khikhi1705
26.10.2019 •
Mathematics
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
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Ответ:
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
Ответ:
yes