Question

8.2.2 quiz: transformations
if the trapezoid below is reflected across the x - axis, what are the coordinates of b?
a. (4, - 8)
b. (-8, - 4)
c. (-4, - 8)

Explanation:

Step1: Recall reflection rule

When reflecting a point $(x,y)$ across the x - axis, the rule is $(x,y)\to(x, - y)$.

Step2: Identify original coordinates of B

Assume original coordinates of B are $(4,8)$.

Step3: Apply reflection rule

$(4,8)\to(4,-8)$

Answer:

A. $(4,-8)$