A wedding planner is organizing the seating for a wedding. He can represent the number of rows by the function f(x)=13x an the number of seats in each row by the function g(x)=5x-2. Which function represents the total number of seats?

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.