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nlexa [21]
3 years ago
14

Please help me with this question. only put the real answer down.

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
7 0
Direct variations look like this (y = 3x_
Not direct variations (or inverse variations) look like this (y= 1/3x.) They are often in fraction form.

So, in your problem the direct variations are: 
y= 3x
x = -1
-0.5x = y
y= 2.2x +7
y= 4

The non-direct variations are:
y = 2/7x
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Where:

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So the best option for this case is:

d. residual

Step-by-step explanation:

For this case we define the dependent variable as Y and the independent variable X. We assume that we have n observations and that means the following pairs:

(x_1, y_1) ,....,(x_n,y_n)

For this case we assume that we want to find a linear regression model given by:

\hat y = \hat m x +\hat b

Where:

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\hat b represent the estimated intercept for the model

And for any estimation of the dependent variable \hat y_i , i=1,...,n is given by this model.

The difference between the observed value of the dependnet variable and the value predicted using the estimated regression equation is known as residual, and the residual is given by this formula:

e_i = y_i -\hat y_i , i=1,...,n

So the best option for this case is:

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brainly.com/question/18028721

Step-by-step explanation:

This question was already asked and answered at this link

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