Acollege sold tickets to a play at 4 dollars a ticket. anyone who attended and paid for a ticket at the door had to pay 5 dollars a ticket. a total of 480 people attended the play, and the revenue from ticket sales was $2100. how may people bought tickets in advance and how many people paid at the door?

Do division of 480 and 2100 and then divide by 5

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.