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3 years ago

Help! Best answer = Brainiest!

Mathematics

1 answer:

cestrela7 [59]3 years ago

5 0

Answer:

b =-6

Step-by-step explanation:

y= 2x^2 +bx+8

Put this in vertex form

2( x^2 + b/2 ) +8

2 ( x^2 + b/2 + b^2/4) +8 - 2(b^2/4)

2 ( x+ b/2) ^2 +8-b^/2

The x coordinate of the vertex is -b/2

The x coordinate from the graph is 3

3 = -b/2

-6 =b

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3 years ago

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