Question

1. Solve by graphing.
x^2 + 2x – 3 = 0

What would the vertex be and would it open up or down.

Answer 1

what are the two numbers that can make -3 when multiplying

Answer 2

3 and -1, or 1 and -3, right?

Answer 3

yes

Answer 4

now which two will sum to +2?

Answer 5

-1 and 3

Answer 6

can you write it in a factor form?

Answer 7

(x-1)(x+3)
??

Answer 8

wait i didnt read the question hehe

Answer 9

to find the x coordinate of the vertex\[-\frac{ b }{ 2a }\]
what will it be?

Answer 10

1,-4

Answer 11

what is b? and a?

Answer 12

@TiffanyLee3 you there

Answer 13

Im sorry my Internet temprarily crashed and nothing was working.

Answer 14

to find the x coordinate of the vertex
-b/(2a)

what will it be

Answer 15

what is a and what is b

Answer 16

ax^2+b*x+c

Answer 17

a=1
b=2

Answer 18

-1

Answer 19

correct now go plug it in the equation what do you get

Answer 20

x^2 + 2x – 3; x=-1 what do you get

Answer 21

-5?

Answer 22

-4 i mean

Answer 23

1-2-3?

Answer 24

-4
so it is (-1,-4) the vertex and it opens up because x^2 is positive

Answer 25

Okay, thank you