SOLUTION: http://www.usatestprep.com/modules/gallery/files/5/519/519.png Determine the equation of the line passing through points C and D.

Question 939515: http://www.usatestprep.com/modules/gallery/files/5/519/519.png
Determine the equation of the line passing through points C and D.
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
linear equation is: where is a slope and is a y-intercept; so, we need and
Determine the equation of
from the graph we see that the line passing through points C =(,) and D=(,) which means:
if =>
and
if => => a x-intercept
then we will use these points to set the system of two equations to find and
........if , we have
........eq.1

........if (,) we have
........eq.2
solve the system:
........eq.1
........eq.2
----------------------------------------------subtract eq.1 from eq.2

now find
........eq.2

so, your equation is:

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