Final answer:
A parabola represented by the equation y = ax + bx² is not one-to-one because each value of x can correspond to multiple values of y.
Step-by-step explanation:
A parabola represented by the equation y = ax + bx² is not one-to-one because each value of x can correspond to multiple values of y. In other words, there are different x-values that yield the same y-value, which violates the one-to-one condition. The function y = ax + bx² is an example of a quadratic function, and quadratic functions are not one-to-one unless they satisfy certain conditions, such as having a restricted domain or range.