In the coordinate plane, points (x, 1) and (12, y) are on line k. If line k passes through the origin and has slope 1/2, then x + y =
Choose the correct choice from the following answers.
A) 4.5  B) 7  C) 8  D) 11  E) 12
Line k passes through the origin and has slope 1/2 means that its equation is y=1/2*x.   Thus: (x, 1)=(2, 1) and (12, y) = (12,6) --&gt; x+y=2+6= 
<gadget id="calculator">2+6</gadget>
<output>8</output>
8.   Answer: 8.
<result>C</result>
In the coordinate plane, points (x, 1) and (12, y) are on line k. If line k passes through the origin and has slope 1/2, then x + y =