Asked by Anne
find a quadratic function that fits the set of data points.
(1,4), (-1.6), (-2,16)
what did i do wrong, i got -2x^2-x+7
(1,4), (-1.6), (-2,16)
what did i do wrong, i got -2x^2-x+7
Answers
Answered by
Steve
his looks familiar, but I can't find it. Here it is:
plug in the x,y values in the equation
ax^2 + bx + c = y
a + b + c = 4
a - b + c = 6
4a - 2b + c = 16
a = 3
b = -1
c = 2
y = 3x^2 - x + 2
Don't know where you took a wrong turn.
plug in the x,y values in the equation
ax^2 + bx + c = y
a + b + c = 4
a - b + c = 6
4a - 2b + c = 16
a = 3
b = -1
c = 2
y = 3x^2 - x + 2
Don't know where you took a wrong turn.
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