Question

The graph of which function has an axis of symmetry at x =-1/4 ?

f(x) = 2x2 + x – 1
f(x) = 2x2 – x + 1
f(x) = x2 + 2x – 1
f(x) = x2 – 2x + 1

Answer 1

\[\huge\rm x=\frac{ -b }{ 2a }\]
to find c-coordinate of vertex(axis of symmetry)

Answer 2

b and a values are \[\rm Ax^2+Bx+C\]
where
a=leading coefficient
b=middle term
c=constant term

Answer 3

will give medals

Answer 4

i have answer chioces listed

Answer 5

@Nnesha

Answer 6

i know
so which is your answer A , B ,C or D >

Answer 7

im thinkin c

Answer 8

@Nnesha

Answer 9

no.

Answer 10

im horrible at math lol but my next guess is d

Answer 11

don't guess
next time when you say is it B or A or D
i'll ask to explain it for me

Answer 12

start with 1st option okay
what is a and b value in that equation

Answer 13

2

Answer 14

a=2 right b=1
x is same as 1x
not substitute a and b for their value into that formula

Answer 15

-1/2*2?

Answer 16

yes right multiply 2 times 2 ?

Answer 17

-1/4

Answer 18

so a is the answer

Answer 19

i think so :=)

Answer 20

thank you!!!

Answer 21

you're lucky don't have to check other 3 options ...

Answer 22

np