SOLUTION: find an equation of the line containing the given pairs. (-2, -6) and (-7, -8)

Algebra ->  Linear-equations -> SOLUTION: find an equation of the line containing the given pairs. (-2, -6) and (-7, -8)      Log On


   

Question 583529: find an equation of the line containing the given pairs. (-2, -6) and (-7, -8)
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
first find your slope of the line %28y-y%29%2F%28x-x%29=m
%28-8-%28-6%29%29%2F%28-7-%28-2%29%29=m
-2%2F-5=2%2F5
m=2%2F5
use the slope intercept formula plug in a point and m and find b
y=mx%2Bb
-6=%282%2F5%29%28-2%29%2Bb
-6=-4%2F5%2Bb
-30%2F5+%2B+4%2F5=b
-26%2F5=b
rewrite your equatin with m and b values
y=%282%2F5%29x-26%2F5
this also looks like this in standard form:
2x-5y=26
either form shows the equation for the line