To graph the line that represents a proportional relationship between y and x, we can use the equation y = kx, where k is the constant of proportionality or the unit rate of change. In this case, k = 4/3, so the equation is y = (4/3)x.
To graph this equation, we can plot two points that satisfy it and draw a line through them. For example, we can use x = 0 and x = 3 as the x-coordinates of the points. When x = 0, y = (4/3)0 = 0, so one point is (0,0). When x = 3, y = (4/3)3 = 4, so another point is (3,4). We can plot these points on a coordinate plane and draw a line that passes through them. The line should have a positive slope of 4/3 and cross the y-axis at the origin.