SOLUTION: decide whether line 1 & line 2 are parallel perpendicular or neither line 1 passes through(-3,-7) and (-7,-5) line 2 passes through(-5,-2) and (-7,-6)

Algebra ->  Conversion and Units of Measurement -> SOLUTION: decide whether line 1 & line 2 are parallel perpendicular or neither line 1 passes through(-3,-7) and (-7,-5) line 2 passes through(-5,-2) and (-7,-6)      Log On


   

Question 413445: decide whether line 1 & line 2 are parallel perpendicular or neither line 1 passes through(-3,-7) and (-7,-5) line 2 passes through(-5,-2) and (-7,-6)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Using the point-slope formula, m+=%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29

line 1 passes through

(-3,-7) and 

(-7,-5)   m = -2/4 = -1/2     | y = (-1/2)x -17/2

line 2 passes through

(-5,-2) and 

(-7,-6)  m =  4/2 = 2         | y = 2x + 8   

 Lines are perpendicular to one another as: -1/2*2 = -1