Pixlemania14 Pixlemania14
  • 25-05-2017
  • Mathematics
contestada

what is the vertex (x,y)? h(t)=2x^2+4x+7
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apologiabiology
apologiabiology apologiabiology
  • 25-05-2017
hack
for y=ax^2+bx+c
the xvalue of the vertex is -b/2a
and the y value is found by subsituting that for x

so

-b/2a

h(t)=2x^2+4x+7
a=2
b=4
-b/2a=-4/(2*2)=-4/4=-1
the y value
h(-1)=2(-1)^2+4(-1)+7
h(-1)=2(1)-4+7
h(1)=2+3
h(1)=5

(-1,5) is da vertex
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