Using multiple regression, the relationship of y to four other variables was established as: y = 12 + 3x₁ – 5x₂ + 7x₃ + 2x₄ when x₁ increases 2 units and x₂ increases 1 unit, while x₃ and x₄ remain unchanged, using this model what change would you expect in your estimate of y?

The estimate of Y changes by -2 or decreases by 2.

Step-by-step explanation:

We are given the following information:

Using Multiple regression, the relationship of Y to four other variables was established as:

increases 2 units and increases 1 unit, while and remain unchanged.

Predicted Y =

Change in Y =

The estimate of Y changes by -2 or decreases by 2.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: