algebra

Triangle ABC is reflected over the x-axis. Triangle ABC has points A (10, 2), B (9, 5), and C (6, 4). What is the B' coordinate?

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  1. reflection over the x-axis:
    (x,y) ----> (x, -y)

    so A(10,2) ---> A'(10,-2)
    B(9,5) --->

    take over

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