Question 90764


       Determine which two equations represent parallel lines.
(a) y = –6x + 2 (b) y = 6x + 2 (c) y = x + 2
(d) y = –6x + 4

 
         For two lines to be parallel their slopes must be equal
  
     From the given set of eq'ns (a) y = -6x+2  and (d) y = -6x+4   

      their slopes are m1 = -6  and m2 = -6 
    Therefore lines y = -6x+2  and y = -6x+4 are parallel.