Find a quadratic model for the set of values: (-2, -20), (0, -4), (4, -20)? Show your work.
1 Answer
Explanation:
A quadratic model can be expressed as;
We have three unknown coefficients,
Simplifying the expressions, we have;
Conveniently, one of the middle expression has given us the value of one of the unknown constants,
In order to avoid dealing with fractions, lets solve for
Now we can plug this in for
Working backwards and solving for
Now we have all of our coefficients, and we can write our model.