If you solve an equation by graphing each side as a separate line, which of the following corresponds to the solution of the equation?

the x–coordinate of the intersection point
the y–coordinate of the intersection point
both the x–coordinate and the y–coordinate of the intersection point
there is only a solution if the lines are identical

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?