imshelsabetteB imshelsabetteB
  • 21-11-2016
  • Mathematics
contestada

How many times does the graph of the function below intersect or touch the x-axis? y=-3x^2+x+4 ...?

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syed514
syed514 syed514
  • 04-12-2016
when the graph touches x axis at that point y = 0

 So, putting y =0
  0 = -3x^2 + x +4
so, if you factoriazte it

−3x^2++4x−3x+4=0

−3x(x+1)+4(x+1)=0

(x+1)+(−3x+4)=0

x=−1,4/3

So, two time at -1 and 4/3 it touches the x-axid
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solbgab
solbgab solbgab
  • 29-01-2019

Answer:

The answer is 2 times.


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