Question

What is the independent variable in this situation and how do you find it?

It takes Gaby only a few hours to read a long book.

Answer 1

the independent variable is used for a quantity(that can have different magnitude/amount), and that does have an effect that depends on it.

"it takes Gaby only a few hours to read a long book."
I believe the long book is independent here. it's the way it was written. what we say is, given the long book, how long will it take to read - that reading time depends on how long the book is (and on Gaby).

Answer 2

so one of my options is "number of books read" do you think that would be the right answers? it the one closest to what you said

Answer 3

what are the other options?

Answer 4

a. number of books read
b. minutes spent reading
c. number of pages read
d. time of day she reads

Answer 5

or maybe
c. number of pages read ?

Answer 6

okay that makes sense because the minutes spent reading doesnt depend on anything. would you mind helping me with other problems like this one?/i just want to make sure they are right.

Answer 7

yes, let's look at another one

Answer 8

okay
an suv gets a average of 15 miles per gallon of gasoline on a road trip. What is the independent quality?

Answer 9

i said it was the gallons

Answer 10

is that right?

Answer 11

No, you are right

Answer 12

sorry

Answer 13

miles depend on gallon

Answer 14

so gallon is independent

Answer 15

okay thats what i thought. another problem?

Answer 16

yes sure

Answer 17

The weight of various stacks of quarters. What is the independent variable?
I am having a hard time with this one this options are
a. number of quarters
b. total quarters used
c. weight of stack
d. number of stacks

Answer 18

and I'm also pretty sure by now that the book question is:
c. number of pages read

because........how long it takes depends on the pages.
if there's more pages, it takes longer.

Answer 19

true, that makes sense.

Answer 20

i think its number of quarters.

Answer 21

does there even depend anything on anything......

Answer 22

yes

Answer 23

it should be the number of quarters that is independent :)

Answer 24

the weight depends on how many it are

Answer 25

so, if the weight depends on it... then it is the independent variable

Answer 26

yeah that makes sense okay for this one:
the faster a vehicle is going, the further it will continue to travel after the brakes are applied.is the dependent variable distance traveled?

Answer 27

I think so

Answer 28

the speed traveled depends on the speed, right?

Answer 29

the speed definately does not depend on the braking distance.

Answer 30

yeah

Answer 31

the difficulty here is that you can always reverse every of these relations

Answer 32

it would be possible to make some physics problem where you give how many stacks per weight,for example. that's not the usual way though.

Answer 33

okay, thank you for your help i understand this now.:)

Answer 34

you're welcome