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Given the line of the best fit for a set of data points with equation y=-5x-2.5 what is the residual for the point (3,6)
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Respuesta :

Answer:

The residual of the point [tex](3,6)[/tex] in the equation [tex]y=-5(x)-2.5[/tex] is [tex]= 23.5[/tex]

Step-by-step explanation:

We have been given point [tex](3,6)[/tex] where [tex]x=3[/tex].

Now the equation is [tex]y=-5(x)-2.5[/tex].

Plugging the value of [tex]x=3[/tex] in the equation of [tex]y=-5(x)-2.5[/tex],

we have to find the predicted value of y and [tex]y=-5(3)-2.5 =-15-2.5=-17.5 [/tex].

So y predicted [tex]=-17.5[/tex].

To find the residual point we have to subtract the actual value from the predicted value.

As actual value of [tex]y=6[/tex] along with the points [tex](3,6)[/tex].

Residual point = Actual value - Predicted value.

                        [tex]=6 -(-17.5) =23.5[/tex]

So the residual for the point [tex](3,6)[/tex] is [tex]23.5[/tex].

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