Solve by using the steps found in this section. Write your answer in exact, simplified form y is inversely proportional to z. If y is when z is 15, find y when z is 30?

Answer 1

k

=

2

Explanation:

when z varies directly proportional to x means a division

c

=

z

x

where c is a constant of proportionality

when z varies inversely proportional to x it means a product

z

y

=

c

now with both

k

=

z

y

x

z

=

8

;

x

=

12

and

y

=

3

k

=

8.3

12

k

=

2