Question

The vertex of the parabola below is at the point (1, -3). Which of the equations below could be the one for this parabola?

Answer 1

http://media.apexlearning.com/Images/201011/29/c2208537-7674-451b-a529-48db9177980a.gif

Answer 2

A. y = (x + 3)2 + 1
B. x = -3(y - 1)2
C. y = (x - 1)2 - 3
D. y = (x + 1)2 - 3

Answer 3

Plug x and y with their values 1 and -3 respectively in the equations, and see which one checks.

Answer 4

@Loser66

Answer 5

@math&ing001 is correct just plug in.

Answer 6

A?

Answer 7

@oscar55773 why don't you "plug in" like what the helper suggested? why don't you stop guessing?

Answer 8

A is wrong by a long shot

Answer 9

Or you don't know what the "plug in" is?

Answer 10

yup

Answer 11

(X,Y) = (1,-3)

Answer 12

d

Answer 13

y=(x,h)+k

Answer 14

Here's an example:
y =(x + 1)^2 - 3
-3 =(1 + 1)^2 - 3
-3 =2^2 - 3
-3 = 1
So D is not an option. Do the same for the others.