Question

A. Identify if the given equation is a direct, inverse, joint or combined variation
with k as the constant of variation.
1. b = kd
3. m =
kn
5. mn = kpq
2. y = klm
ko​

Answer 1

Given  : equations

1. b = kd

2. y = klm

3  m =  kn

5. mn = kpq  

To Find : given equation is a direct, inverse, joint or combined variation

Solution:

Direct variation if a variable increases then other variable also increases with a constant factor   y = kx

inverse variation if a variable increases then other variable decreases with a  constant factor  xy = k

Joint variation is a relationship between atleast three variables, where one variable varies directly with all other variables.

y = kxz

Combined Variation  is a relationship between three or more variables where it is in direct variation with few variable and in inverse  variation with other variable  y = kx/z

b = kd

direct,  

y = klm

joint  variation

m =  kn

direct  variation

mn = kpq  

=> m = kpq/n

Combined variation

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