Question

If y varies directly as z and y = 19 when z = 152, find the equation of the variation.

Answer 1

Explanation:

it means

y = kz

the given values show us to calculate k to get the equation :

19 = k×152

k = 19/152 = 1/8

so, the equation is

y = (1/8)z

or

y = z/8