Question

question 9 of 10
if the trapezoid below is reflected across the x - axis, what are the coordinates of b?
a. (-5,9)
b. (5,-9)
c. (-9,-5)
d. (-9,5)

Explanation:

Step1: Determine original coordinates of B

The coordinates of point B on the original trapezoid are (5, 9).

Step2: Apply reflection rule

The rule for reflecting a point (x, y) across the x - axis is (x, -y).

Step3: Calculate new coordinates

For point B(5, 9), when reflected across the x - axis, x = 5 remains the same and y changes sign. So the new coordinates of B' are (5, -9).

Answer:

B. (5, -9)