Question

question 1 of 10
if the trapezoid below is reflected across the x-axis, what are the coordinates of b?
image of coordinate plane with trapezoid

a. (5, -9)
b. ...

Explanation:

Answer:

First, find the original coordinates of point \( B \). From the graph, point \( B \) has coordinates \( (5, 9) \) (assuming the y - coordinate is 9, as it's above the x - axis). When a point \( (x,y) \) is reflected across the x - axis, the rule for reflection is \( (x,y)\to(x, - y) \). So for point \( B(5,9) \), after reflection across the x - axis, the new coordinates \( B' \) will be \( (5,-9) \). So the answer is A. (5, - 9)