(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A quartic function has x-intercepts of -5, -1, 2, and 4. The point (3.-8) lies on the curve. Determine an equation of the function.

2. Relevant equations

3. The attempt at a solution

y = k (x+5)(x+1)(x-2)(x-4)

Expanded form: f(x)=kx^4 + 9x^2 - 38x + 40 <---My expanded form is most likely wrong because expanding a quartic function tends to get clustered and confusing.

Other than this I have absolutely no idea how to solve this question.

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# Polynomial Functions (word problem)

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