According to the graph on the right, the equilibrium

I. 8y² - 2y - 21 = 0

II. 2x² + x - 6 = 0

I. 4x² -  15x + 9 = 0

II. 20y² -  23y + 6 = 0

I. 40x² + 81x + 35 = 0

II. 63y² + 103y + 42 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: x² - 20x + 96 = 0

Equation 2: y² - 18y + 72 = 0

I:  x² - 33x + 242 = 0

II:  y² - 4y - 77 = 0

I. x² – 13x + 40 = 0

II. 2y² – 15y + 13 = 0 

I. 5x² = 19x – 12

II. 5y² + 11y = 12

I. 81x - 117√x + 40 = 0

II. 81y - 225√y + 136 = 0

I. x² - 19x + 84 = 0

II. y² - 25y + 156 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: x² - 24x + 135 = 0

Equation 2: y² - 26y + 153 = 0