y = x + 2; y = 5
Step-by-step explanation:
The functions on the graph are y = x+2 and y=5.
The diagonal line has a slope of 1 because it goes up and over by 1 unit at a time. This is the graph y=x where m=1. The y-intercept is 2. So the form is y = x+2.
The horizontal line is written as y = 5 because its points all have the y value of 5.