Question

Order the group of quadratic functions from widest to narrowest graph. y=-4x^2, y=-3x^2, y=-5x^2
A.Y=-3X^2,Y=-5X^2, Y=-4X^2
B. y=5x^2, y=-4x^2 ,y=-3x^2
C.y=-3x^2,y=-4x^2,y=-5x^2
D.Y=4X^2, y=-3x^2 , y=-5x^2

Answer 1

(A)

Answer 2

Check B). You seem to have a typo.

Answer 3

o

Answer 4

is that a conformation?

Answer 5

ok now look lol

Answer 6

i think B) is y=-5x^2, y=-4x^2, y=-3x^2

Answer 7

If y=ax^2 the magnitude of a depends the width of the graph........ lower the magnitude of a wider the graph

Answer 8

so, what do u think?

Answer 9

@rajathsbhat i dont think that is correct

Answer 10

it is now lol

Answer 11

Hey, the length of the latus rectum is 4a, right?
So, greater the "a", longer is the latus rectum, wider is the graph!

Answer 12

now i think it is (B)

Answer 13

& you are right!

Answer 14

Look at the sign dude they are negative

Answer 15

Dude, that only means the parabola in facing down, that's all.

Answer 16

So, we need to take the magnitude only

Answer 17

Can u PLZ draw a graph

Answer 18

for each and see

Answer 19

I'll try.

Answer 20

ooo. You r right!, @saurav. @ james, you should write it in the form \[x^{2}=-4ay & then compare "a".

Answer 21

I thought it was in the form \[y^{2}=-4ax\]

Answer 22

U forget shakya

Answer 23

lol. But the answer then is C isn't it?

Answer 24

YEP...... its C

Answer 25

The real asker is @85295james. So, do you get it, James?

Answer 26

James, do you understand why it's C?

Answer 27

Please reply.

Answer 28

o thank you