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Mathematics 21 Online
OpenStudy (anonymous):

Find the vertex of the quadratic. y=x^2-6x+17

OpenStudy (anonymous):

-b over 2a

Nnesha (nnesha):

same question. what's the formula to find x -coordinate of vertex ?

OpenStudy (ali2x2):

you finally beat me nem

OpenStudy (anonymous):

IKR

OpenStudy (anonymous):

so happyyy

OpenStudy (ali2x2):

xD

OpenStudy (anonymous):

if only I could type the whole thing faster

OpenStudy (anonymous):

i know i did -18/2(x)

Nnesha (nnesha):

yes use same formula so what is a=? and b= ?

OpenStudy (anonymous):

x and 18

Nnesha (nnesha):

18 ?

OpenStudy (anonymous):

sorry 6

Nnesha (nnesha):

there is invisble one \[\huge\rm y=\color{reD}{1}x^2\color{blue}{-6}x+17\] b= NEGATIVE 6

Nnesha (nnesha):

so leading coefficient is one

OpenStudy (anonymous):

okay so -6/2(1)

Nnesha (nnesha):

no there is a negative in the formula and b is also negative

Nnesha (nnesha):

\[\huge\rm x=\frac{ -(?) }{2(1) }\] what is b write it down in the parentheses

OpenStudy (anonymous):

6

OpenStudy (anonymous):

is the answer (3,8)

Nnesha (nnesha):

correct.

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