We have the next information
slope = 3/5
passes in the origin in (0,0)
The equation of the line in slope - intercept form is

where m is the slope and b is the y-intercept
The y-intercept is the value of the coordinate y, when the coordinate x is 0 in, this case because the line passes through the origin the y-intercept is 0
The equation of the line is
