Question

Will fan+medal
What are the coordinates of the vertex of the graph of the function y=-x^2+6x-11

what are the coordinates of the vertex of the graph of the function y=-3x^2-12x+3

Which graph represents the function 3x^2+12x-6
Which equation matches the graph shown below?
https://www.connexus.com/content/media/456845-3112011-33137-PM-495084547.png

Which of the following functions has a rate of change that stays the same?

Answer 1

@TheSmartOne

Answer 2

To find the vertex of \(\sf ax^2+bx+c\) use the formula \(\sf\large h=\frac{-b}{2a}\)

And then plug h back in to your equation and the vertex will be \(\sf (h, f(h) )\)

Answer 3

@Thatonegirl_

Answer 4

ill fan+medal

Answer 5

You don't know any of these??

Answer 6

nope

Answer 7

well the 1st and 2nd r practically the same so I'll tell u how to do the first

Answer 8

Do you have the formula for the vertex?

Answer 9

i know the first one is x=1

Answer 10

The x coordinate?

Answer 11

I stated it above.

Answer 12

no the y sorry

Answer 13

Well to find the Y you need to plug the X into the original equation, right?

Answer 14

the second i think is (-3,-20)

Answer 15

Yea i did that

Answer 16

thats how i know that the first one is right (hopefully)

Answer 17

Your equation is in the form of
\(\sf ax^2+bx+c\)

so it's vertex is \(\sf\large(\frac{-b}{2a},(\frac{-b}{2a}))\)

Answer 18

the x coordinate formula is the opposite of b over 2 times a.
\[\frac{ -b }{ 2a }\]

Answer 19

ok so plug in the numbers?

Answer 20

yup. a=-1 and b=6

Answer 21

is that the answer or do we have to solve
?

Answer 22

the secind one am i right?

Answer 23

hello????

Answer 24

Sorry, and yes now plug that in for x to find y=