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what is the equation of line in slope-intercept form

the point are (1,4), (-1,2) 

 Oct 22, 2018
 #1
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(1,4), (-1,2) 

 

First....find the slope between these two points

 

[2 - 4 ]  / [ -1 - 1 ]  =     -2 / -2   = 1

 

Using either point  - I'll use  (1, 4)  - to write the equation, we have

 

y  =  1 ( x - 1)  +  4

 

y  =  x  - 1 + 4

 

y  = x + 3    in slope-intercept form

 

 

cool cool cool

 Oct 22, 2018

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