SOLUTION: if L1:y = -2x + 3 and L2:y = ax + 4, then find the value of a if: A) L1 is parallel to L2 b) L2 is perpendicular to L2

Algebra ->  Linear-equations -> SOLUTION: if L1:y = -2x + 3 and L2:y = ax + 4, then find the value of a if: A) L1 is parallel to L2 b) L2 is perpendicular to L2      Log On


   

Question 1070283: if L1:y = -2x + 3 and L2:y = ax + 4, then find the value of a if:
A) L1 is parallel to L2
b) L2 is perpendicular to L2
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Line1 has slope -2.
Line2 has slope a.


If the lines parallel, then -2=a.
If perpendicular, then %28-2%29%28a%29=-1.