SOLUTION: a) what is the slpe of any line that is parallel to the line through (-3,-4) and (5,-1) b) what is the slope of a line that is perpendicular to the line through (5,4) and (5,-2)

Question 148248: a) what is the slpe of any line that is parallel to the line through (-3,-4) and (5,-1)
b) what is the slope of a line that is perpendicular to the line through (5,4) and (5,-2)
Answer by mangopeeler07(462) (Show Source): You can put this solution on YOUR website!
a) what is the slope of any line that is parallel to the line through (-3,-4) and (5,-1)
put the difference of the y's over the difference of the x's.

Simplify
or . That is the slope. Any line that is parallel will have that slope.

b) what is the slope of a line that is perpendicular to the line through (5,4) and (5,-2)

put the difference of the y's over the difference of the x's.

Simplify
That is the slope of the line. Undefined.

Find the reciprocal

Multiply it by -1

or . That is the slope of any line that is perpendicular.
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