b[tex] \alpha [/tex][tex] \frac{cd}{e} [/tex]
b=[tex]k \frac{cd}{e} [/tex]
Where k is a constant of proportionality.
b=18, c=4,d=9, e=6
Finding the value f k,
18=[tex] \frac{k*4*9}{6} [/tex]
6k=18
k=3
The equation then is;
b=[tex] \frac{3cd}{e} [/tex]
The constant of variation=3
