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In the least-squares line ŷ = 5 − 2x, what is the value of the slope? (Enter an exact



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

When x increases by 1 unit, ŷ decreases by −2 units.

When x increases by 1 unit, ŷ decreases by 2 units.     

When x increases by 1 unit, ŷ increases by 2 units.

When x decreases by 1 unit, ŷ decreases by 2 units.

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