Question

Which graph shows the quadratic function y = 3x2 − 12x + 10?

A
B
C
D

Answer 1

heres the graphs

Answer 2

@Callisto

Answer 3

1. Check delta
delta = (-12)^2 - 4(3)(10) = 24 >0
=> 2 intercepts with x-axis

2. find vertex
3x2 − 12x + 10
= 3(x^2 -4x) +10
= 3(x-2)^2 -12 +10
= 3(x-2)^2 -2
So, vertex is at (2, -2)
Can you get the answer now?

Answer 4

I'm confused as to would this be the 2nd graph or the 4th @Callisto

Answer 5

I know this is like really old but ...

Answer 6

What do you think?

Answer 7

My Hearts Telling me D But My Mind Is Telling Me B

Answer 8

Why is your heart telling you it's D?

Answer 9

Because It Looks Like It's Set in the right spot , But then again my heart has been broken so many times Thats Its not sure....

Answer 10

And why is your mind telling you it's B?

Answer 11

My Mind Is Telling Me It's B Because , It Looks Like It Goes Up 2 then slide to -2 , Looks More like a rise over run

Answer 12

Do you know what does "x-intercept" mean?

Answer 13

Like x would be 2

Answer 14

What if I say there are two x-intercepts, what does that mean?

Answer 15

O_O I think the dots would be on the same line

Answer 16

I'm starting to think about it and I believe it is d

Answer 17

Number of intercepts = how many times you "cut" or "touch" the x-axis.