Question

m

Answer 1

\[x=\frac{ -b }{ 2a }\]

Answer 2

which would be 1?

Answer 3

\[a=7,b=21\]

Answer 4

the a and b refer to coefficients in

ax^2 + bx + c

Answer 5

compare this with you equation

Answer 6

so then -21/2(7) would equal -3/2

Answer 7

yes - thats the x coordinate of the vertex

Answer 8

you find the y coordinate by plugging x = -3/2 into 7x ^{2}+21x+1

Answer 9

193/4

Answer 10

thanks!

Answer 11

yw