HELP PLEASE! In exercises 5-10 determine whether the graph represents a linear or nonlinear fuction. explain (just short and to the point)

Arectangular exercise mat has a perimeter of 36 feet the length of the mat is twich the width writeand solve an equation to determine the length in feet. of the mat then find the area in square feet of the mart

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

Me asap! what is the slope of this line? enter your answer in the box.