MATH 9: 2nd Quarter Flashcards
For two quantities, x and y, and increans in x causes an increase in y as well.
Similarly, a decrease in x causes a decrease in y statements.
Direct Variation
Y varies directly as x
Direct Variation
Y is directly proportional to x
Direct Variation
Y is proportional to x
Direct Variation
Y=kx
Direct Variation
Formula on Direct Variation
Y=kx
The distance D varies directly as the time T.
D=kt
For two quantities X and Y, and increase in X causes a decrease in Y or vice versa.
Inverse Variation
Y varies inversely to x
Inverse Variation
Inversely proportional to x
Inverse Variation
INVERSE VARIATION
Where k is the constant of variation and k __ 0
k≠0
Formula for Inverse Variation
k
Y=___
x
k
y=___
x
Formula for Inverse Variation
The speed S is inversely proportional to the time T.
k
s=___
t
The statement
“A varies jointly to b and c” means:
a=kbc
Where k is the consonant of variation and k ≠ 0
Joint Variation
