In the coordinate plane, points (x, 2) and (8, y) are on line k. If line k passes through the origin and has slope 1/2, then x + y =  Answers:
A) 8 B) 6 C) 5 D) 3 E) 2
Line k passes through the origin and has slope 1/2 means that its equation is y=1/2*x.   Thus: (x, 2)=(4, 2) and (8, y) = (8,4) --&gt; x+y=4+4= 
<gadget id="calculator">4+4</gadget>
<output>8</output>
8.   8nswer: 8
<result>A</result>
In the coordinate plane, points (x, 2) and (8, y) are on line k. If line k passes through the origin and has slope 1/2, then x + y =