Question

Use a calculator to graph the following equation and give the domain and range. -2x^2+4x+8 [Hint: find the vertex]

Answer 1

the first coordinate of the vertex of \(y=ax^2+bc+c\) is \(-\frac{b}{2a}\)

Answer 2

in your case \(a=-2,b=4\)

Answer 3

Okay:) I unfortunately do not have a graphing calculator so ANY help is appreciated :)

Answer 4

@sleepyjess are you caught up enough on you're math to help?:)

Answer 5

I give up on precalc

Answer 6

So you can help?:)

Answer 7

@Spamchopper7 can you help?

Answer 8

ok ill help

Answer 9

Thank you!

Answer 10

whats your ideas for x and y?

Answer 11

2 and 8?

Answer 12

and do you have a graph to show me?

Answer 13

No it did not provide me with one all it said was what i typed

Answer 14

ok jus let me finish (almost done)

Answer 15

Okay thank you :)

Answer 16

x=1 y=10

Answer 17

plz dont blame me if i get it wrong

Answer 18

but im sure

Answer 19

I wont haha thank you so much! i dont have a graphing calculator so it would have been impossible to do

Answer 20

jus go on google they have a graphing calculator just type ur awnser then BOOM there it is!

Answer 21

i meant question

Answer 22

could you help me on some other stuff maybe? its math

Answer 23

i could try but im on homework myself

Answer 24

Well get that done first :) Put priorities first! lol

Answer 25

thx goodbye until next time