Help me, please this isn't really so hard, but I really need help

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

An equation where variables are used to represent known values—function notation true or false

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.