In the xy-coordinate system, line k passes through points (-9m, 0) and (0, 3m). Which of the following is a possible equation of line k?
Choose one.
A) y = -3x + 3m B) y = 1/3*x - 9m C) y = 3x + 3m D) y = 1/3*x + 3m E) y = -1/3*x - 9m
The slope of the line is 3m/9m=1/3.   The y-intercept is 3m.   the equation of the line is: y = 1/3*x +3m   The answer is y = 1/3*x + 3m.1/3*  +3= 
<gadget id="calculator">1/3*  +3</gadget>
<output>1</output>
1/3*x + 3m.
<result>D</result>
In the xy-coordinate system, line k passes through points (-9m, 0) and (0, 3m). Which of the following is a possible equation of line k?