Answer:
Equation of both lines are same , so they are equivalent
Step-by-step explanation:
we are given with the graph of a and b
the graph of 'a' and 'b' are vertical lines
Graph line 'a' is a vertical line at x=-5
Graph line 'b' is also vertical line at x=-5
Both lines coincide with one another , so equation of both lines are same
Equation of both lines are same , so they are equivalent