2 answers:
Answer:
Step-by-step explanation:
y = ax² + bx + c
( - 6)²a - 6b + c = 0 ⇒ 36a - 6b + c = 0
( - 4)²a - 4b + c = 3 ⇒ 16a - 4b + c = 3
2²a + 2b + c = 0 ⇒ 4a + 2b + c = 0
A =
= - 96
=
= 24
=
= 96
=
= - 288
a =
=
= -
b =
= - 1
c =
= 3
<em>y = - </em>
<em> x² - x + 3</em>
Answer:
y = -1/4x^2 - x + 3
Step-by-step explanation:
(-6,0)
(-4,3)
(2,0)
36a - 6b + c = 0
16a -4b + c = 3
4a + 2b + c = 0
c = -4a - 2b
36a - 6b - 4a -2b = 0
16a - 4b -4a - 2b = 3
32a -8b = 0
12a - 6b = 3
4a - b = 0
4a - 2b = 1
b = -1
4a + 1 = 0
4a = -1
a = -1/4
c = 1 + 2 = 3
y = -1/4x^2 - x + 3
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