The scatter plot and table show the number of grapes and blueberries in 10 fruit baskets. Use the two points closest to the line. Which equation is the equation of the regression line?

A. y = 1/3x - 1/3
B. y = 4/5x + 18
C. y = 4/5x - 36/5
D. y = 5/4x - 45/2

The scatter plot and table show the number of grapes and blueberries in 10 fruit baskets Use the two points closest to the line Which equation is the equation o class=

Respuesta :

Answer:

The correct answer would be B;  y = 4/5x - 36/5

Step-by-step explanation:

The equation of the regression line is y = 4/5x - 36/5

The equation of the regression line

From the graph, we have the following points

(x,y) = (29,16) and (34,20)

Calculate the equation of the line, using:

[tex]y = \frac{y_2 -y_1}{x_2 -x_1} * (x - x_1) + y_1[/tex]

So, we have:

[tex]y = \frac{20 -16}{34 -29} * (x - 16) + 29[/tex]

Evaluate the differences

[tex]y = \frac{4}{5} * (x - 16) + 29[/tex]

Expand

[tex]y = \frac{4}{5}x - \frac{4}{5}* 16 + 29[/tex]

Evaluate

[tex]y = \frac{4}{5}x - \frac{35}{5}[/tex]

This is approximately  y = 4/5x - 36/5

Hence, the equation of the regression line is y = 4/5x - 36/5

Read more about regression equations at:

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