3 years ago

BIU A

Mathematics

1 answer:

marta [7]3 years ago

5 0

how many classes are there?

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A data set consists of the following pairs of data: (3,5), (5,8), (6,13) Will the correlation coefficient for these data points

Vanyuwa [196]

Positive correlation means that if x goes up then y goes up, negative correlation means that if x goes up then y goes down. Since both x and y are increasing each time, it is positive.

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3 years ago

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soldi70 [24.7K]

It’s impossible what are you doing Distributed property or solving for x?

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3 years ago

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-0.2x^2+0.9x+0.6=y What's the vertex form for this equation?

hjlf

Answer: y = -0.2(x - 2.25)² + 1.6125

Step-by-step explanation:

$y = -0.2x^2 + 0.9x + 0.6\\\\y - 0.6 = -0.2x^2 + 0.9x\\\\y - 0.6 =-0.2(x^2-4.5x)\\\\y-0.6+\underline{(-0.2)(2.25)^2}=-0.2(x^2-4.5x+\underline{2.25^2})\\\\y-0.6-1.0125=-0.2(x-2.25)^2\\\\y-1.6125=-0.2(x-2.25)^2\\\\y=-0.2(x-2.25)^2+1.6125$