Question

PLEASE HELP
The table below represents the distance of a car from its destination as a function of time.


Time
(hour)
x
Distance (miles)
y
0
900
1
850
2
800
3
750


Part A: What is the y-intercept of the function and what does this tell you about the car? (4 points)

Part B: Calculate the average rate of change of the function represented by the table between x = 1 to x = 3 and what does the average rate represent? (4 points)

Part C: What would be the domain of this function if the car traveled the same rate until it reached its destination? (2 points)

Answer 1

@TheBadWolf

Answer 2

are those numbers the coordinates? like (0,900) (1,850) so on...

Answer 3

i dont even know, this class is so stupid, all there is is a chart with the x's .. 2,3,4,3 and the y's ... 1,1,-3,-3

Answer 4

could you get a picture of the chart? or list out what exactly it says?

Answer 5

Time(hour) Distance (miles)
x y
0 900

1 850

2 800

3 750

Answer 6

Part A: What is the y-intercept of the function and what does this tell you about the car? (4 points)

Part B: Calculate the average rate of change of the function represented by the table between x = 1 to x = 3 and what does the average rate represent? (4 points)

Part C: What would be the domain of this function if the car traveled the same rate until it reached its destination? (2 points)

Answer 7

So for part A you can figure out that the car is traveling at 50 miles an hour because after every hour the distance decreases by 50

Answer 8

wow im so stupid. thats it for a ?

Answer 9

yeah, so for b the average change is 100 miles for every 2 hours, which can be simplified back to 50mph which represents the speed of the car

Answer 10

it all seems so simple, theres so equations or subtracting or dividing or bla bla involved here ? for part C im completely lost because it involves finding the doman which i though you could only do with an ordered pair.. then again i suck a math lol

Answer 11

The domain would be a list of (x,y) values so that could be something like {(0,900), (1,850), (2,800), ...(18,0)}

Answer 12

but the domain is the x value of the ordered pair right ?

Answer 13

and part c is asking for one specific function and the domain of that function..

Answer 14

also for part a it asked for the function and thats what i have no idea of

Answer 15

No, i'm pretty sure the domain is the list of all possible values

Answer 16

so whats the function for this stupid table, im very frustrated

Answer 17

oh so now you want a formula that contains all of that so you slope would be -50/1 because you go down 50 and to the right 1 so y=-50x+b. B being the y-intercept and the line crossed the y axis at 900 b must equal 900 so y=-50x+900

Answer 18

so thats the function they're asking for ? y=-50x+900?

Answer 19

yeah and the answer may need to be written like this.
{y=-50x+900| (0,900),...(18,0)

Answer 20

thats for part C ? and also is y=-50x+900 the function they;re asking for in part a ?

Answer 21

sorry forgot the other bracket
{y=-50x+900| (0,900),...(18,0)}

Answer 22

Yes

Answer 23

yes yes or yes to just one part of the question ...

Answer 24

yes to both

Answer 25

wait so what is the domain they're asking for in part c

Answer 26

@TheBadWolf ... ?

Answer 27

@TheBadWolf hello ?

Answer 28

{(0,900), (1,850), (2,800), (3, 750), (4,700), (5,650), (6,600), (7,550), (8,500), (9,450), (10,400), (11,350), (12,300), (13,250), (14,200), (15,150) (16,100), (17,50), (18,0)

Answer 29

sorry my browser crashed

Answer 30

what are all those numbers in parenthesis ?!?!?!

Answer 31

All the points that fit on the line

Answer 32

omg i do not understand anything !!! like seriously its like you're speaking another language

Answer 33

I forgot the end bracket again XP In other words this is the domain
{(0,900), (1,850), (2,800), (3, 750), (4,700), (5,650), (6,600), (7,550), (8,500), (9,450), (10,400), (11,350), (12,300), (13,250), (14,200), (15,150) (16,100), (17,50), (18,0)}

Answer 34

I appreciate you helping me but I do not undertsand anything even if it doesnt have a typo, like literally i do not understand

Answer 35

like i do not know what to put as answers for each part because i tried to understand and i cant come up with answers ...

Answer 36

Yeah it is kinda confusing, I'm trying to make sense of it myself. These problems seem very oddly set up...

Answer 37

yeah i swear its the stupidest class ever

Answer 38

What class is it?

Answer 39

Stupid algebra 1 honors

Answer 40

this is what im going to submit .. part a : function = y=-50x+900 .the car is traveling at 50 miles an hour because after every hour the distance decreases by 50.

part b : the average change is 100 miles for every 2 hours, which can be simplified back to 50mph which represents the speed of the car

part c : {y=-50x+900| (0,900),...(18,0) the domain is 18

Answer 41

That's what I would put

Answer 42

alright, well thanks for your help. i have another question open, can you please help me with that one too ?

Answer 43

I can try. Tag me on it