gabbygabby223
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  • 01-06-2017
  • Mathematics
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The vertex of this parabola is at (2,-1).when the y value is 0,the x value is 5.what is the coefficient of the squared term in the parabolas equation

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gerishonwambugu
gerishonwambugu gerishonwambugu
  • 01-06-2017

Vertex form: 
y = a(x-2)^2 -1 
solve for a: 
0 = a(5-2)^2 -1 
1 = a(3)^2 
1 = 9a 
a = 1/9
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