-8x=5y+4 is a direct variation or not. if it is what is k 3y=12x a direct variation or not. If is is what is k. (K is the answer If it’s a direct variation)

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Im literally having a mental breakdown

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?