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a function that can be written in the form y = ax2 + bx + c, where a, b and c are real numbers, and that when plotted, results in a parabolic graph.
the extent of the relationship between the ordering of two random variables.
trigonometric ratio, expressed as opposite side divided by adjacent side in a right-angled...
the axis of symmetry; or the line about which a figure is reflected.
is a trigonometric ratio defined as the adjacent side divided by the hypotenuse.