Question

Find the line of symmetry for the parabola whose equation is y = 2x^2 - 4x + 1.

Give the values of a, b, and c from the general form of the equation (2x + 1)(x - 2) = 0.

What is the line of symmetry for the graph of y = -3x^2 + 12x - 11?

What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?

Which of the following points lies on the graph of y = x^2 - 2x + 6?

The line of symmetry of the parabola whose equation is y = ax2 - 4x + 3 is x = -2. What is the value of "a"?

Answer 1

ind the line of symmetry for the parabola whose equation is y = 2x^2 - 4x + 1

Answer 2

hey dad

Answer 3

it is once again \(-\frac{b}{2a}\) with \(a=2,b=-4\)

Answer 4

hello dear
back from the rave already i see

Answer 5

yeah i popped a molly can i have ice cream for breakfast?

Answer 6

sure , but we are out of orange soda
did you get \(x=1\) ?

Answer 7

yeah, but would it be -? or - 1/2?

Answer 8

oh whoops, nvm i see what i did wrong

Answer 9

\[-\frac{b}{2a}=-\frac{-4}{2\times 2}=1\]

Answer 10

i forgot the negatives cancelled

Answer 11

right

Answer 12

sorry dad still kinda rollin off the molly

Answer 13

you will develop early onset Alzheimers like me

Answer 14

Give the values of a, b, and c from the general form of the equation \[(2x + 1)(x - 2) = 0\]\[2 x^2-3 x-2=0\]

Answer 15

\[2 x^2-3 x-2=0\\
ax^2+bx+c=0\]

Answer 16

clear?

Answer 17

yes dad

Answer 18

What is the line of symmetry for the graph of y = -3x^2 + 12x - 11\[-\frac{b}{2a}=-\frac{12}{2\times (-3)}\]

Answer 19

let me know when you get \(x=2\)

Answer 20

i see -12/-6 = 2?

Answer 21

yes

Answer 22

What is the x-coordinate of the vertex of the parabola whose equation is \(y = 3x^2 + 9x\)?
\[-\frac{b}{2a}=-\frac{9}{2\times 3}\]

Answer 23

what does -9/6 simplify to?

Answer 24

cancel a 3 top and bottom

Answer 25

let me know when you get \(-\frac{3}{2}\)

Answer 26

- 2/3?

Answer 27

you got it upside down

Answer 28

\[-\frac{9}{6}=-\frac{3}{2}\]

Answer 29

it only gives me these 3 options, -3, -1 1/2, -2/3

Answer 30

this is the equation
\[y = 3x^2 + 9x\] right?

Answer 31

yes

Answer 32

ooh i see they want a mixed number

Answer 33

\[-\frac{3}{2}=-1\tfrac{1}{2}\]

Answer 34

ah i see

Answer 35

Which of the following points lies on the graph of y = x^2 - 2x + 6
got choices?

Answer 36

(-3,21), (-2,0), (-1,10)

Answer 37

\[ (-3)^2 - 2(-3) + 6=21\]

Answer 38

so first one is right
didn't check the second one, hold on

Answer 39

no second and third are wrong
only the first one

Answer 40

okay dad

Answer 41

The line of symmetry of the parabola whose equation is\( y = ax^2 - 4x + 3\) is \(x = -2\). What is the value of "a"?

Answer 42

\[-\frac{b}{2a}=-2\\
-\frac{-4}{2a}=-2\]

Answer 43

or
\[\frac{4}{2a}=-2\] so
\[-4a=4\]

Answer 44

-1?

Answer 45

yup

Answer 46

that it?

Answer 47

gonna make a new one, thanks for all your help daddy!

Answer 48

yw