Answer:
The lines will have one positive y-intercept and one negative y-intercept is not true about the graph of a system of equations with infinitely many solutions.
Explanation:
A system of equations with infinitely many solutions suggests on the graph, the equations will appear to be the same (they will look like one graph) because all points on each equation are equal. This suggests that it's impossible for the y-intercepts to be different, which is why the "lines will have one positive y-intercept and one negative y-intercept " is a false statement.