You can put this solution on YOUR website! 5x + 3y = 7
y - 4 > 0
Graph as 3y=-5x+7;; y= -(5/3)x + (7/3)
That is a line.
The other line is y>4. That is a horizontal line where y=4.
The solution to this problem, assuming that both equations have to be satisfied, lies ON the line ABOVE y=4, not including the point where y=4.