Question

one solution, no solution, infinetly many solutions
1. y=ax+b
y= cx+d

2. y=ax+d
y=ax+b

3. y=ax+b
y=-ax+b

4. y=ax+b
2y=2ay+2b

Answer 1

1. no solution

2. infinite

3. ( x , y ) = ( 0 , b ) (one solution)

4. infinite