Sunday, December 4, 2011

Determine if the line y+x-2 = 0 and the line 6y-3x +8 = 0 are parallel, perpendicular, or neither.

Given the lines:


y + x -2 =
0


6y-3x + 8 =0


We need to
determine the relation between the lines ( parallel, perpendicular, or
neither)


First we will use the slope to find the
relation.


If the slopes are equal, then the lines are
parallel.


if the product of the slopes is -1, then the
slope are perpendicular.


Let us rewrite the equations of
the lines into the slope form.


==> y = -x + 2
............(1)


==> y = (3/6)x -
8/6


==> y= (1/2)x -
4/3........(2)


We notice that the slopes are not equal.
then the lines are not parallel.


Also, the product of the
slopes is -1*1/2 = -1/2 , then the lines are not
perpendicular.


Then the slopes are not
parallel nor perpendicular.

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