Consider the goal of the athletic association described in the previous activity. Let s represent the number of student tickets sold, and let a, represent the number of adult tickets sold. Written in standard form, the equation that represents the situation is 5s + 10a = 3000. One efficient way to graph a linear function in standard form is to use X- and y-intercepts. You can calculate the x-intercept by substituting y = 0 and solving for x. You can calculate the y-intercept by substituting x = 0 and solving for y.