Mathematics: Adata set consists of the following data points: (3,5), (5,8), (6,13) the slope of the best fit line is 2.5. find the y-intercept of this line.

Adata set consists of the following data points:

Ответ:

brea2006

18.01.2022

(3,5),
(5,8),
(6,13)
------
(14,26)/3

then use the point slope form of a line to find equation of line

$y-y_1=m(x-x_1)
\\y - \frac{26}{3} = 2.5(x- \frac{14}{3})
\\y - \frac{26}{3} = \frac{5}{2} (x- \frac{14}{3})
\\y - \frac{26}{3} = \frac{5}{2} x- \frac{5}{2}\times\frac{14}{3}
\\y - \frac{26}{3} = \frac{5}{2} x- \frac{35}{3}
\\6y-52=15x-70
\\15x-6y-18=0$

Find y-intercept for x = 0.

$15x-6y-18=0
\\15\times0-6y-18=0
\\-6y=18
\\y=-3$

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Ответ:

logan867

01.12.2021

Mathematics

-2x+8=y=x-1
-2x+8=x-1
add 2x to both sides
8=3x-1
add 1
9=3x
divide 3
3=x
sub
y=x-1
y=3-1
y=2

(x,y)
(3,2)

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Adata set consists of the following data points:

(3,5), (5,8), (6,13)

the slope of the best fit line is 2.5. find the y-intercept of this line.

Ответ:

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