Question

Can someone check my work.. Find the coordinates of vertex, y-intercept, x-intercept (if any exist).

Answer 1

g(x)= -x^2 -6x+40

Answer 2

-(-6)/2(-1) = 6/-2 =3

g(3)= -(3)^2 -6(3)+40
31

vertex- (3,31)

Answer 3

I see a mistake.. -3

Answer 4

-3 is the right x for vertex :) wats the y then?

Answer 5

Vertex- (-3,49)

Answer 6

y-inter- (0,40)

Answer 7

both correct!

Answer 8

x-inter- (-10,0),(4,0)

Answer 9

correct as well!

u can click on the "properties" button the next time:

https://www.wolframalpha.com/input/?i=y%3D-x%5E2+-6x%2B40

Answer 10

Do you mind checking another one?

Answer 11

@Destinyyyy hahahaaa do u wanna give wolframalpha a try first? i can take a look if u dont like the wolf :)

Answer 12

I dont really know how to use that and I dont entirely trust those kind of sites. I use mathway and its checked my answers wrong before..

Answer 13

If you dont want to check it, its fine

Answer 14

OK sure i will do it :)

Answer 15

Okay thank you..

f(x)=x^2+6x+8

vertex- (-3,-1)
y-inter- (0,8)
x-inter-(-2,0),(-4,0)

Answer 16

@Destinyyyy all correct! GREAT job :)

Answer 17

Thanks..

Answer 18

welcome