Question

Identify the vertex for the graph of y = −3x2 + 6x − 2.

(1, 1)
(−1, 1)
(1, −5)
(−1, −5)

Answer 1

To find the vertex use the formula below to find the x vertex point of y = −3x^2 + 6x − 2
x=−b2a

Plug our points in the the formula
x=−(+62(−3)

x=−6−6

x = 1 //This is our x vertex
Now we have the x coord (1, ?) we need to find the y coord
To find the y coord just plug our x coord, which is -1 into the equation
y=−3x2+6x−2

y=−3(1)2+6(1)−2

y=−3+6−2

y=3−2

y =1 //This is our y vertex point
Now we have x and y so our vertex is at (1, 1

Right or wrong???

Answer 2

so the vertex formula is -b/2a, first of all

Answer 3

so thats -6/-6, which equals 1

Answer 4

yup you're right!!