Question

For what value (s) of 'a', the system of lines equations 2x+9y=7 and (a-1)x+(a+1)y=3a+1 represent parallel.

Answer 1

Answer:

c c 1 2 , then the pair of linear equations is 6. Do the equations 4x +3y– 1 =5 and 12x+9y= 15 represent a pair of coincident lines? 7.