how are zeros and the vertex of a quadratic function interpreted in the real world please help i'm super confused

What term makes it inconsistent y=2x - 4

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

What’s the range cuz i can’t find it?