Question

What is the equation of this trend line?
RE
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Answer 1

`K=-2J+28`

Explanation:

step 1

Find the slope of the line

The formula to calculate the slope between two points is equal to

`m=(k2-k1)/(j2-j1)`

we have the points

(2,24) and (6,16)

substitute in the formula

`m=(16-24)/(6-2)`

`m=(-8)/(4)`

`m-2`

step 2

Find the equation of the line in slope intercept form

`K=mJ+b`

we have

`m=-2`

`b=28` ----> the k-intercept is the point (0,28) see the graph

substitute

`K=-2J+28`