With 2 unknowns & 3 points, we should have 3 equations to solve:
a + b + c = 13
4a -2b + c = -8
9a -3b +c = -7
Therefore, a = 2
b = 9
c = 2
Kj J.
asked 11/19/19Find the quadratic function
y=ax2+bx+c
whose graph passes through the given points.
(1,13),
(−2,−8),
(−3,−7)
With 2 unknowns & 3 points, we should have 3 equations to solve:
a + b + c = 13
4a -2b + c = -8
9a -3b +c = -7
Therefore, a = 2
b = 9
c = 2
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