Question

Estimate a line of best fit using two points on the line

Answer 1

Answer:

Option A is correct.

Step-by-step explanation:

Given Two points on line are ( 2 , 8 )  &  ( 8 , 5 )

We have to find A line of best fit for the graph using these two points.

We find the equation of line using two point form,

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

So,

$y-8=\frac{5-8}{8-2}(x-2)$

$y-8=\frac{-3}{6}(x-2)$

$y-8=\frac{-1}{2}(x-2)$

$y-8=\frac{-1}{2}x-\frac{-1}{2}\times2$

$y-8=\frac{-1}{2}x+1$

$y=\frac{-1}{2}x+1+8$

$y=\frac{-1}{2}x+9$

Therefore, Option A is correct.

Answer 2

Your answer is A.

y = -1/2x + 9