Final answer:
A half-parabola graph suggests a quadratic (Power) relationship between variables.
Step-by-step explanation:
A half-parabola graph suggests a quadratic (Power) relationship between variables. In a quadratic relationship, the dependent variable is related to the square of the independent variable. The equation of a quadratic relationship is usually of the form y = ax^2 + bx + c, where a, b, and c are constants.