Determine the axis of symmetry and the vertex of the given function. y = 2x2 − 12x + 21

asked Jul 21, 2019 138k views

1 vote

Determine the axis of symmetry and the vertex of the given function.
y = 2x2 − 12x + 21

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4 votes

-b/2a = -(-12)/2*2
12/4 or 3. X=3
Now put 3 back into the equation for x

2(3)^2 -12(3) +21
18 -36 +21. = 3. Y=3

(3,3)

Janaya answered Jul 28, 2019

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