Tell whether x and y show direct variation. Explain your reasoning. If so, find k.

x=2/5y

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?