In the coordinate plane, points (x, 1) and (10, y) are on line k. If line k passes through the origin and has slope 1/3, then x + y =
Choose the correct choice from the following answers:	A) 4.5	B) 7	C) 8	D) 19/3	E) 12
Line k passes through the origin and has slope 1/3 means that its equation is y=1/3*x.   Thus: (x, 1)=(3, 1) and (10, y) = (10,10/3) --&gt; x+y=3+10/3=19/3.   Answer:19/3.
<result>D</result>
In the coordinate plane, points (x, 1) and (10, y) are on line k. If line k passes through the origin and has slope 1/3, then x + y =