Question

Plz help!!!
Given the equation y = x2 – 4x + 3.
Convert to vertex form. Show all work

Answer 1

http://www.mathwarehouse.com/geometry/parabola/images/standard-vertex-forms.png

Answer 2

What's the coefficient of the middle term? :)

Answer 3

Divide it by 2 and square that

Answer 4

\[y=x^2-4x+3\\y=x^2-4x+4-1\\y=(x-2)^2-1\]

Answer 5

okay thanks

Answer 6

no problem :)

Answer 7

how would you find the vertex from that???

Answer 8

@kc_kennylau

Answer 9

http://www.mathwarehouse.com/geometry/parabola/images/standard-vertex-forms.png

Answer 10

\[y=(x-2)^2-1\\\therefore V=(2,-1)\]

Answer 11

oh, I see.

Answer 12

would I have to graph it to find the line of symmetry?

Answer 13

don't think so :)

Answer 14

\[\because V=(2,-1)\\\therefore \mbox{Eqn of L}_\mbox A:\hspace{4pt}x=2\]

Answer 15

PostScript: Don't follow my presentation

Answer 16

k...

Answer 17

how would I "state the zeros"???

Answer 18

Zeros occur when y=0