The equation y = 2x - 3 represents a straight line on a Cartesian plane. The coefficient of x, 2, represents the slope of the line, which indicates that for every 1 unit increase in x, there is a 2 unit increase in y. The constant term, -3, represents the y-intercept, which is the point where the line intersects the y-axis when x is zero.
To graph this line, you can start at the y-intercept of -3 and then move 2 units up and 1 unit to the right to locate another point on the line. You can continue this process to plot additional points and then connect them to form a straight line.