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donnie1999
 one year ago
 WILL MEDAL 
 HELP PLEASE 
Determine in which direction the parabola below opens.
y = x^2  7x + 18
donnie1999
 one year ago
 WILL MEDAL   HELP PLEASE  Determine in which direction the parabola below opens. y = x^2  7x + 18

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donnie1999
 one year ago
Best ResponseYou've already chosen the best response.0@mathmate @ganeshie8

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3to be honest, you can just focus on the "y = x^2......." part :) If you know what your general parabola looks like, y = x^2 7x + 18 will be the same in the way it opens but the vertex and intercepts will be different :) Here's a comparison: dw:1436878515043:dw

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3i like to think of y = x^2 as a happy face :) and y = x^2 as a sad face :( dw:1436878729051:dw

donnie1999
 one year ago
Best ResponseYou've already chosen the best response.0Im still kinda confused can you please explain it a little more please.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.0@butterflydreamer can't we also think of that graph as a reflection as well ? x^2 is the parabola.. and x^2 is a reflection of x^2 ?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436878884202:dw

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.0my drawing... bad I know T_T

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3yeeees you can :) It's the sameeee thing ^_^

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3@donnie1999 what don't you understand?

donnie1999
 one year ago
Best ResponseYou've already chosen the best response.0Wait I think I got it, if the x variable is positive does the parabola open upward?

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3x^2 is POSITIVE > open upward x^2 is NEGATIVE > open downward

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.0AH! I am stuck on reply !

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.3dw:1436879145093:dw