If the line y = 4x + 3m-1 intersects with the line y = x-m-4, and the intersection point is in the third quadrant, then the value range of M is the same

If the line y = 4x + 3m-1 intersects with the line y = x-m-4, and the intersection point is in the third quadrant, then the value range of M is the same

y=4x+3m-1
y=x-m-4
4x+3m-1=x-m-4
3x=-4m-3
x=-(4m+3)/3
y=-(4m+3)/3-m-4=-(7m+15)/3
x-15/7
So m > - 3 / 4