The line on the graph passes the points (0,2) and (4,3) what is the vertical change for each unit of horizontal change of the line in the graph

We just started the introduction into circles and i have no idea how to do this.

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

What is 1.5% of 120 or what number is 1.5% of 120