Question 1078839
Question 1078837
<pre>
f(a)=b means that the graph contains the point (a,b)

So

f(2)=-3 means that the graph contains the point (2,-3)

{{{drawing(400,400,-5,5,-5,5,circle(2,-3,.1), locate(2,-3,"(2,-3)"),
line(-10,0,10,0), line(0,-10,0,10)
 )}}}

We want to reflect that point through the origin, so first draw a line
(in red from that point up to the origin, like this:

{{{drawing(400,400,-5,5,-5,5,circle(2,-3,.1), locate(2,-3,"(2,-3)"),
line(-10,0,10,0), line(0,-10,0,10),red(line(2,-3,0,0))
 )}}}

Now continue that line the same distance on the other side of the
origin, like this:

{{{drawing(400,400,-5,5,-5,5,circle(2,-3,.1), locate(2,-3,"(2,-3)"),
line(-10,0,10,0), line(0,-10,0,10),red(line(-2,3,2,-3)),


circle(-2,3,.1), locate(-2,3+.3,"(?,?)")
 )}}}

Now can you figure out what that point is? If so, the answer will be
its y coordinate.


Edwin</pre>