Set * Sample input: (-1, 0.7) ; (1, 0.2) ; (-2, 0.4) ; (2, 0.1) ; (-3, 0) ; (4, 0.5)

Extension Equation y = x^2 y = x^2 - 3 y = x^3 y = x^3 - 3 y = x^4 y = x^4 - 3