1. What is the slope and y-intercept

Answer:
slope: 2.5 ; y-intercept: 3
Step-by-step explanation:
To find the slope using two points, you would do (x2-x-1) and (y2-y1). You then take the result of y2-y1 and divide it by x2-x1. (0,3) and (1,5.5)
5.5-3 to get 2.5
1-0 to get 1.
2.5/1 gets you 2.5
The slope is 2.5
To find the y-intercept, it is actually already given. (0,3). Meaning that is where that line intersects the y axis on. So, y=mx+b
y=2.5x+3