Examlex
Which of the following is true?
Second-order Polynomial
A polynomial equation of degree two, which can be expressed in the form ax^2 + bx + c, where a, b, and c are constants.
Parabola
A symmetric, U-shaped curve represented by a quadratic function, found in various mathematical and physical contexts.
Concave
A shape or function curving inward, resembling the interior of a circle or sphere.
Sample Regression Line
A line that best fits the data points in a scatter plot, representing the relationship between an independent variable and a dependent variable based on sample data.
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