What is the slope between the points (2, 3) and (-3, 0)?
since slope is defined as y/x; a visual way to do this is to draw a line and mark the points
|dw:1345998421648:dw| determine what you have to add or subtract to get from one side to the other; and that will be the slope
|dw:1345998498938:dw|
a more mathical approach could be to zero out one of the points (2, 3) (-3, 0) -2 -3 ----- 0 ,0 and what you do to one point, do to the other (2, 3) (-3, 0) -2 -3 -2 -3 ----- ------- 0 ,0 -5,-3 then just stack y/x to define the slope: -3/-5
so the slope between the points (-6, 0) and (2, -9) would be 2.3?
lets check :) (-6, 0) and (2, -9) +6 +6 ----- ------- 0,0 8,-9 ; stack y/x .... its not 2.3
how do you know if you're adding or subtracting?
just zero out one of the point, and what you did to it, do to the other one ....
which method are you trying to use?
if we try the line: |dw:1345999120602:dw|
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