anonymous
  • anonymous
For what values of x is the graph of y= (2)/4-x concave downward ?
Mathematics
schrodinger
  • schrodinger
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mathmate
  • mathmate
Hint: |dw:1326756969064:dw| Concave down is the shape of a cap, opens towards the bottom. Concave up is the shape of a cup, opens towards the top.
anonymous
  • anonymous
so is my answer x < 4?
mathmate
  • mathmate
4 is correct. You look for the part of the graph that open downwards (concave down).

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mathmate
  • mathmate
x<4 is open towards the top (upwards).
anonymous
  • anonymous
o ok I get it thanks
mathmate
  • mathmate
You're welcome! :)
anonymous
  • anonymous
my answer is x>4
anonymous
  • anonymous
yes boxer it is x>4

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