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anonymous
 one year ago
Help please
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = –2x^2 +6x – 1.
A) x = 3; vertex: (3, 35)
B) x = –1.5; vertex: (–1.5, – 14.5)
C) x = –1.5; vertex: (–1.5, –5.5)
D) x = 1.5; vertex: (1.5, 3.5)
anonymous
 one year ago
Help please Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = –2x^2 +6x – 1. A) x = 3; vertex: (3, 35) B) x = –1.5; vertex: (–1.5, – 14.5) C) x = –1.5; vertex: (–1.5, –5.5) D) x = 1.5; vertex: (1.5, 3.5)

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popitree
 one year ago
Best ResponseYou've already chosen the best response.0from the equation, after simplifying u will get \[(x\frac{ 3 }{ 2 })^{2} = \frac{ y }{ 2 }+\frac{ 7 }{ 4 }\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2this question is same just like we did on the previous thred \[\huge\rm \frac{ b }{ 2a }\] use this formula to find xcoordinate of the vertex

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0IN the general quadratic\[y=ax^2 + bx + c\]the axis of symmetry is the vertical lineline\[x=\frac{ b }{ 2a }\]Yhis also gives the xcoordinate of the vertex. Plug this value of x back into the function to get the ycoordinate of the vertex.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2and then replace x by its value into the equation to find ycoordinate axis of symmetry = x coordinate of the vertex

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can we go over this step by step.. still confused So I replace b with 2 and a with 6? @Nnesha

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2no \[\huge\rm Ax^2+Bx+C=0\] B is middle term A is leading coefficient

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh actually the opposite I mean.. 2 > a and 6 > b

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2substitute b and a by their values into the formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so now we divide by 2?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2there is 2(2) you can multiply them first or reduce the fraction

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2can you reduce the fraction 6/4 = ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes divide by 2 or 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and then 3/2 = 1.5 right?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2now find ycoordinate of the vertex

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0y = 2(1.5)^2 + 6(1.5)  1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0D) x = 1.5; vertex: (1.5, 3.5)
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