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Use the Leading Coefficient Test to determine the end behavior of the polynomial function. Then use this end behavior to match the function with its graph. \( f(x)=-8 x^{3}+2 x^{2}+4 x-3 \)

Ask by Bowen Pope. in Kuwait
Jan 03,2025

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The polynomial \( f(x) = -8x^3 + 2x^2 + 4x - 3 \) has an odd degree of 3 and a negative leading coefficient. Therefore, as \( x \) approaches negative infinity, \( f(x) \) approaches positive infinity, and as \( x \) approaches positive infinity, \( f(x) \) approaches negative infinity. When graphing, the left end of the graph should rise upward, and the right end should fall downward.

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Bonus Knowledge

To determine the end behavior of the polynomial function \( f(x)=-8 x^{3}+2 x^{2}+4 x-3 \), we focus on the leading term, which in this case is \(-8x^3\). Since the leading coefficient is negative and the degree of the polynomial (which is 3) is odd, the end behavior can be described as follows: as \( x \) approaches infinity, \( f(x) \) approaches negative infinity, and as \( x \) approaches negative infinity, \( f(x) \) approaches positive infinity. Thus, the graph will fall to the right and rise to the left. Now, when matching the function with its graph, look for the one that reflects this end behavior. Essentially, it will have a downward slope at the right side and an upward slope at the left side, clearly indicating the behavior of an odd-degree polynomial with a negative leading coefficient. Happy graph searching!

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