In the least-squares line  = 5 – 9x, what is the value of the slope? When x changes by 1 unit, by how much does y change? When x increases by 1 unit, y decreases by 9 units. When x decreases by 1 unit, y decreases by 9 units.     When x increases by 1 unit, y decreases by −9 units. When x increases by 1 unit, y increases by 9 units.

Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter12: Algebra Of Matrices
Section12.CR: Review Problem Set
Problem 37CR
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In the least-squares line  = 5 – 9x, what is the value of the slope?

When x changes by 1 unit, by how much does y change?

When x increases by 1 unit, y decreases by 9 units.

When x decreases by 1 unit, y decreases by 9 units.    

When x increases by 1 unit, y decreases by −9 units.

When x increases by 1 unit, y increases by 9 units.

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