Question 1060415
We know that we have an x^2 term since this is a quadratic
:
the general form is
:
ax^2 + bx +c = 0, where a, b, c are constants
:
we need just three points to find the function
:
take the first three point (-3, 54), (-2, 26), (-1, 8), then
:
f(-3) = 54
f(-2) = 26
f(-1) = 8
:
9a -3b +c = 54
4a -2b +c = 26
1a -1b +c = 8
:
we use Cramer's rule calculator to find a, b and c
:
a = 5, b = -3, c = 0
:
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f(x) = 5x^2 -3x
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