Question

f(x)=x^2-2x-3

Answer 1

what is the question?

Answer 2

this is a parabola that faces up
the zeros are -1 and 3 because
\[x^2-2x-3=(x+1)(x-3)\]

Answer 3

the vertex is
\[(1,-4)
\]

Answer 4

whats the x-intecept

Answer 5

x - intercepts means where it crosses x - axis same as the zeros. they are -1 and 3

Answer 6

If (x+1)(x-3) = 0 what must x be?

Answer 7

grr.. too many answers, not enough questions satellite ;p

Answer 8

on the x- axis, y = 0, so asking for the x - intercepts is a synonym for "set = 0 and solve"

Answer 9

hello polpak

Answer 10

what is with this 7C3 business? is that the way it appears on a calculator?

Answer 11

soo how to i type this answer in the computer to my answer key

Answer 12

Yes. That's the calculator notation that they're introduced to when they start that section.

Answer 13

can someone help me!!

Answer 14

I think we did.. I have no idea how to put it into your class' answer key.

Answer 15

like is is [-1,3) (-1,3)

Answer 16

Oh. Well it's asking for the x intercept. So what is the x,y values of the two points?