SOLUTION: Find a cubic model (0, -12), (1, 10), (2, 4), (3, 42)

SOLUTION: Find a cubic model (0, -12), (1, 10), (2, 4), (3, 42)

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Question 954080: Find a cubic model
(0, -12), (1, 10), (2, 4), (3, 42)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The general form of a cubic polynomial is,

Input each point to get an equation,

.
.

1.
.
.

2.
.
.

3.
Subtract eq. 1 from eq. 2 and eq. 3 to eliminate .

4.
.
.
.

5.
.
.
Finally subtract eq. 4 from eq. 5 to eliminate .

Then,

and

So then,

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