Question

Which of the following are most likely factors of the function graphed?
x(x-9)
x(x+9)
(x+3)(x-3)
(x-3)(x-3)

Answer 1

@Here_to_Help15

Answer 2

where does that curve cross the x axis

Answer 3

3 and -3

Answer 4

since it crosses 3, that means x - 3 is a factor
since it crosses -3, we know x-(-3) is a factor

Answer 5

if it crossed at x = k, then x-k is a factor

Answer 6

ohhh so its (x+3)(x-3)

Answer 7

yes

Answer 8

could you help with another?

Answer 9

sure, one more

Answer 10

Which equation could be used to solve the graph?
-x^2+3x+2=0
x^2+3x+2=0
x^2+3x-2=0
x^2-3x+2=0

Answer 11

first determine the x-intercepts and use them to find the factors like before

Answer 12

-1 and -2

Answer 13

what are the factors based on that

Answer 14

the third one?

Answer 15

what factors do you get, forget about the answer choices right now

Answer 16

(x-1)(x-2

Answer 17

remember, if x = k is an x-intercept or root, then x-k is a factor

Answer 18

you listed something where the roots are x = 1 and x = 2

Answer 19

oh so (x+1)(x+2)?

Answer 20

correct, expand that out

Answer 21

x^2+3x+2

Answer 22

good

Answer 23

thank you!!