it is about direct proportion .

1. BY :-RISHABH
JAIN
CLASS:-VIII – A
ROLL NO. :-34

2. ACKNOWLEDGEMENT
I would like to express my special thanks of
gratitude to my teacher Mrs. amrita who gave
me the golden opportunity to do this wonderful
ppt on this topic, which also helped me in doing
a lot of Research and i came to know about so
many new things I am really thankful to them.
Secondly i would also like to thank my parents
and friends who helped me a lot in finalizing
this ppt within the limited time frame.

3. VARIATIONS
If two quantities depend on
each other in such a way that
the change in one results in a
corresponding change in the
other, then the two quantities
are said to be in a variation.

4. VARIATIONS ARE OF 2
TYPES
Direct proportion
Inverse proportion

5. DIRECT VARIATION
 Two quantities x and y are said to
be in direct proportion if whenever
the value of x increases or
decreases then the value of y
increases or decreases in such a
way that the ratio x/y remains
constant

6. X and y are in direct proportion, if
x/y =k, where k is a constant i.e.
:-
X1/Y1 = X2/Y2 =X3/Y3

7. THANKS.