It is 4,7 to show this draw a graph and then flip it to see its reflection
( 4, 7 ) , the rule of reflecting across the x axis is negate the y value & leave x value the SAME ! ..
example : ( -6, 5 ) , reflect across the x axis it will be ( -6, -5) :) ... hope you understand
OK THE ANSWER IS B this is because the answer is b and this is because the answer is b R