Question

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The graph models how the population of a particular species of flower in a forest has changed over time.

What does the y-intercept represent?

A. When initially counted, the flower population was 200.

B. It took 200 years for the flower to disappear from the forest.

C. The difference between the greatest and least populations was 200.

D. The flower population peaked at 200.

Answer 1

@Vocaloid

Answer 2

The Answer is A

Answer 3

y-intercept shows 200

Answer 4

yeah good

Answer 5

any thoughts? the "vertex" is the highest point of the parabola

Answer 6

the third one

Answer 7

if it's on the ground, that wouldn't be the highest point

any other ideas?

Answer 8

not third, fourth or second

Answer 9

it's first since you said it's the highest

Answer 10

or maybe i'm wrong

Answer 11

it's asking about the y-coordinate, what physical property does y represent in this situation? height or time?

Answer 12

height

Answer 13

good, so the y-coordinate of the vertex would be the highest height

which answer choice corresponds with this idea?

Answer 14

fourth

Answer 15

y is height, not time

Answer 16

oh i'm sorry

Answer 17

second

Answer 18

well done

Answer 19

https://static.k12.com/nextgen_media/assets/8090417-NG_AL1_O_07_U12_Quiz_09.png

The graph models the height of a diver above water, in feet, x seconds after jumping off a springboard.

What does the x-intercept represent?

A. The diver was in the air for 2 s.

B. The springboard was 2 ft above the surface of the water.

C. The diver jumped 2 ft above the springboard.

D. The diver reached the maximum jump height after 2 s.

Answer 20

the answer is A

Answer 21

good

Answer 22

if you look at the parabola, the graph is increasing across a certain range of x values, what would that be?

Answer 23

8

Answer 24

The answer is first

Answer 25

good

Answer 26

any thoughts or ideas so far? I'm not 100% sure myself but I have a few ideas

Answer 27

the answer is either C or D

Answer 28

the x-intercept occurs when y = 0, so area = 0, so this can't be the max area

remember that x represents the length of the fencing used

Answer 29

ok not D

Answer 30

[this one is kind of hard to conceptualize, but imagine if they take all of the fencing and lay it out on a straight line, this would give us 0 area and the maximum length of fencing 100]

Answer 31

so first one is the best choice

Answer 32

correct

Answer 33

Thank you so much, i couldn't done it without you, you're so smart

Answer 34

but also can i ask one question

Answer 35

sure what

Answer 36

Can you believe Toys R us are closing down ?

Answer 37

it's a little off topic but yeah, online retailers are taking over, personally I don't see it as a bad thing but *shrug*

Answer 38

I mean this new generation of kids are over the new technology now and Toys R us are shutting down cause Technology took over

Answer 39

every time i see a little kid they're on an ipad or iphone

Answer 40

I'm going to close this, you could talk about this in the chat/ or open up a new question in the writing section maybe if you still want to talk about this