Question 990333
Develop a quadratic function that fits the data in the table:



X --- | --- Y

3.99 | 500

5.99 | 650

7.99 | 200

======================
If you know it's a quadratic 3 points is sufficient.
---
y = ax^2 + bx + c
Sub the values to get 3 equations
500 = a^3.99^2 + 3.99x + c
15.9201a + 3.99b + c = 500
---
35.8801a + 5.99b + c = 650
---
63.8401a + 7.99b + c = 200
========
Solve for a, b & c
Can you do that?
email via the TY note for help or to check your work.