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?

To find the coordinate of B' after reflecting triangle ABC over the x-axis, we need to understand that reflecting a point over the x-axis negates its y-coordinate while keeping its x-coordinate the same.

The y-coordinate of B is 5. When we reflect this point over the x-axis, the y-coordinate becomes -5 (negation of 5). So, the y-coordinate of B' is -5.

The x-coordinate of B is 9. Since reflecting over the x-axis does not change the x-coordinate, the x-coordinate of B' remains the same at 9.

Therefore, the coordinate of B' is (9, -5).

reflection over the x-axis:

(x,y) ----> (x, -y)

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

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