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anonymous
 one year ago
In which direction does the parabola open?
y = –3x2 + 5x + 10
a. down
b. up
c. left
d. right
anonymous
 one year ago
In which direction does the parabola open? y = –3x2 + 5x + 10 a. down b. up c. left d. right

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1hint: if we have the subsequent equation: \[\Large y = A{x^2} + Bx + C\] then we have the subsequent two cases: dw:1432919493186:dw or: dw:1432919521156:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1first case when A >0 second case when A <0

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1A is the corfficient of x^2

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1what is the coefficient A, of your equation?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1A is the number which multiplies x^2

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1for example, if we have \[\Large y =  7{x^2} + 2x + 5\] then A =7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, but what is a coefficient?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1it is not 3, since in front of 3 there is a minus sign

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't understand what a coeffiecient IS

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so what is your case, the first or the second one?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it opens down? because A is less than 0?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you!! I understand now!

amistre64
 one year ago
Best ResponseYou've already chosen the best response.0a coefficient is simply the signed number of a term in the polynomial. \[P(x)=c_0+c_1x+c_2x^2+c_3x^3...\] the set of all the c's define the c.oefficients of the polynomial
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