What type of line is the graph of y = 7?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

How do you determine whether a relationship represented as as graph is linear or nonlinear

It says factor each expression completely 8y+48