kaitlynlapointe kaitlynlapointe
  • 23-04-2021
  • Mathematics
contestada

The axis of symmetry for the graph of the function s1x) = 2x2 + bx + 10
2 + bx + 10 is x=6. What is the value of b?

Respuesta :

altavistard
altavistard altavistard
  • 24-04-2021

Answer:

b = -4

Step-by-step explanation:

The formula for b is

       -b

x = -------  and so  -b = 2ax, or b = -2ax

       2a

if the axis of symmetry is known, but we need b, substitute the given x and a values to find b:

b = -2(2) = -4

b = -4

The function is then y = 2x^2 - 4x + 10

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