The question requires you to give the coordinates of the image after a reflection along the x-axis.
The rule for reflection over the x-axis , the x-coordinate remains the same while a negative sign is added to the y-coordinate value.
This means a point {x,y} -----------will form image at ------ {x,-y}
The object coordinates are given as;
S {3,-5} ---------reflection over x-axis---------- S'{3,5}
T {4,-4} ---------reflection over x-axis---------- T' {4,4}
U {4,-8} ----------reflection over x-axis---------- U' {4,8}
R {3,-9} ----------reflection over x-axis---------- R' {3,9}
Answer
S' {3,5} , T' {4,4} , U' {4,8} , R' {3,9}