Question

what and how do i do direct and inverse proportion?

Answer 1

direct proportion:
y is directly proportional to x
y=kx where k is a constant
For inverse proportion,
y is inversely proportional to x
y=k/x where k is a constant

Answer 2

now what i s direct inve

Answer 3

you mean what the meanings of direct and inverse are?

Answer 4

yes and how i do it

Answer 5

direct means that
if y increases, x also increases
if y decreases, x also decreases

inverse :
if y decreases, x increases
if y increases, x decreases

but remember, there is a fixed ratio between x and y

Answer 6

now whats the ratio between the the two of them

Answer 7

there should be some informations given.
for example, the question gives us y=3 while x=6 . y is inversely proportional to x
We can put the (6,3) into y=k/x
3=k/6
k=18
then equation of the relation between x and y is
y=18/x

for direct proportion, it is the same way to do it but put x and y into y=kx

Answer 8

ok so how do u know when the number will increase and decrease

Answer 9

from the relation given,there are two types of questions
1st type:
it is stated directly. For instance, given y=...and x=.....and y is directly proportional to x. Find the relation betwwen x and y
2nd type:
given y=4 while x=8 and y=2 while x=4
then you can see
x increases from 4 to 8 but y increases from 2 to 4
both increases so the numbers are increasing