Question

Which system has no solution?
A) y=x+4 y-x=-4
B) 2y=2x+8 -2x=2y-8
C) y=1/2x+6 2x+5=y
D) y=4x+1 y-1=4x

Answer 1

the answer is A because the slopes are the same but the Y intercept are in opposite sides, which means they will never intersect - giving us no solutions.