The pair of equations x=0 and x= -4 has
i)one solution
ii) two solutions
iii) infinitely many solutions
iv) no solution

Dear Student,
x= 0 and x= -4 are two lines passing through (0,0) and (-4,0) respectively, parallel to y-axis. Hence, they both are parallel lines. They don't intersect at any point. Therefore, the pair of equations has no solution.
Regards