Question 334529
The vertices of triangle FGH are F(1,1), G(3,-5),H(6,0). Find the coordinates of the vertices after a reflection over the y-axis.
<pre><b>
{{{drawing(400,400, -7,7,-8,6, 

triangle(1,1,3,-5,6,0), grid(1), 

locate(1.3,.8,F), locate(3.1,-5,G), locate(6.1,.7,H),


red(triangle(-1,1,-3,-5,-6,0),

locate(-1.7,.8,"F'"), locate(-3.5,-5.1,"G'"), locate(-6.5,.7,"H'")

)  )}}} 

The reflected points are the red ones

<font color = "red">F'(-1,1), G'(-3,-5), H'(-6,0)</font>.

The reflection of a point over the y-axis is formed by changing the 
sign of its x-coordinate (leaving the sign of the y-coordinate as it is).

Edwin</pre>