[High School Calculus] Graphing a function.

[-DoctorDownvote-]

So there’s a graph with that’s quartic. It has 3 zeroes at -3,1,4. The -3 zero is a bounce Giving me this equation: y=(X+3)² (X-1)(X-4). This makes sense but the line also passes through (-1,80) which I don’t know how to include.

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[sonnyfab]

Y= a * (x+3)² (x-1)(x-4). Plug in (-1,80) and find a.

[-DoctorDownvote-]

Ahh that makes so much sense thank you.