Answer:
(x, 2/3x -1)
Explanation:
According to the graph, the y-intercept is (0,-1) so b = -1
the slope looks like rise of 2 and run of 3 crossing (3,1) from (0,-1)
so slope = 2/3
y = 2/3x - 1
so both lines are overlapping each other, then the lines are made up of infinite solutions
I hope this helps