Answer
(a) $(-4,2)$
(b) $ (4,-2)$
(c) $ (4,2)$
Work Step by Step
(a) A point symmetric with respect to the x-axis means $(x,y)\to (x,-y)$, thus $(-4,-2)\to (-4,2)$
(b) A point symmetric with respect to the y-axis means $(x,y)\to (-x,y)$, thus $(-4,-2)\to (4,-2)$
(c) A point symmetric with respect to the origin means $(x,y)\to (-x,-y)$, thus $(-4,-2)\to (4,2)$