Price: ? discount: 5% sale price: $57

I just answered this :]

x - 0.05x = 57,
0.95x = 57,
57/0.95 = original price
Original price = $60

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.