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.