Respuesta :

The rule for a reflection across the x-axis is

[tex](x,y)\rightarrow(x,-y)[/tex]

According to the given graph, vertex B has coordinates (3,8). Let's apply the reflection rule.

[tex]B(3,8)\rightarrow B^{\prime}(3,-8)[/tex]

Therefore, the coordinates of B' are (3,-8).

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