SOLUTION: Given A(-5,8), B(12,10) are points on line 1, and C(-7,-2), D(10,0) are points on line 2. 1a) Determine if line 1 and line 2 are parallel lines. yes or no Reason: 1b) Find

Algebra ->  Angles -> SOLUTION: Given A(-5,8), B(12,10) are points on line 1, and C(-7,-2), D(10,0) are points on line 2. 1a) Determine if line 1 and line 2 are parallel lines. yes or no Reason: 1b) Find       Log On


   



Question 401576: Given A(-5,8), B(12,10) are points on line 1, and C(-7,-2), D(10,0) are points on line 2.
1a) Determine if line 1 and line 2 are parallel lines.
yes or no
Reason:
1b) Find the slope m of a line perpendicular to line 2
m=

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
m%5BAB%5D+=+%2810-8%29%2F%2812--5%29+=+2%2F17
m%5BCD%5D+=+%280--2%29%2F%2810--7%29+=+2%2F17.
Therefore line AB is parallel to line CD.
The slope m of a line perpendicular to line CD is -17/2.