we know that
The rule of the reflection over the y-axis is equal to
(x,y) --------> (-x,y)
so
Apply the rule
J(2,2) -------> J'(-2,2)
K(7,4) ------> K'(-7,4)
L(9,-2) -------> L'(-9,-2)
M(3,-1) -------> M'(-3,-1)
To draw the figure, plot the points and join them
using a graphing tool
see the attached figure
please wait a minute (i will draw the figure)