SOLUTION: Line D passes through the points (-2, 5) and (-1, -9). What is the slope of a line parallel to line D? A.-14 B.-1/14 C.1/14 D.14

Algebra ->  Graphs -> SOLUTION: Line D passes through the points (-2, 5) and (-1, -9). What is the slope of a line parallel to line D? A.-14 B.-1/14 C.1/14 D.14       Log On


   

Question 762662:
Line D passes through the points (-2, 5) and (-1, -9). What is the slope of a line parallel to line D? A.-14 B.-1/14 C.1/14 D.14



Answer by Stitch(470) About Me  (Show Source):
You can put this solution on YOUR website!
When given two points; (X1,Y1) & (X2,Y2), the slope of the line is found by the following equation.
m+=+%28Y2-Y1%29%2F%28X2-X1%29
Plug in the values that you were given.
m+=+%28-9+-+5%29%2F%28-1+-+-2%29
m+=+-14%2F1
m+=+-14
The slope of line D is -14.
Two line are parallel when they have the same slope. So the answer is -14