What is the equation of the line shown in the coordinate plane below

Icould really use some with this question.

How many square centimeters of wrapping paper will be used to wrap the shoe box?

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?