Four equations are listed below:

MATHEMATICS · Multi-part · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Four equations are listed below: (a) y=−5x4y=-5x^4 (b) y=12x4y=\tfrac{1}{2}x^4 (c) y=−3x3y=-3x^3 (d) y=2x3y=2x^3 Descriptions of four unlabeled curves are given: (i) Write the letter (A–D) that matches each equation (a–d). (ii) Justify every match by referring to the degree and the sign of the leading coefficient of the corresponding equation.

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