treyvonbutler72 treyvonbutler72
  • 17-05-2018
  • Mathematics
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The line of symmetry of the parabola whose equation is y = ax2 - 4x + 3 is x = -2. What is the value of "a"?

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sqdancefan
sqdancefan sqdancefan
  • 22-05-2018
For equation
  y = ax² +bx +c
the line of symmetry is given by
  x = -b/(2a)

Filling in the given values, we have
  -2 = -(-4)/(2a)
  a = 4/(2(-2)) = -1

The value of "a" is -1.
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