Triangle abc is reflected over the x-axis. what are the coordinates of the image of the vertex a?
a. a’(2, 5)
b. a’(-2, 5)
c. a’(5, -2)
d. a’(2, -5)

A. A' (2, -5)

Step-by-step explanation:

A is the right answer because the coordinates of vertex A are (2, 5)

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D. A'(2, -5)

Step-by-step explanation:

Since point A is at (2, 5), and you are reflecting it across the x-axis, you take a look at the y-coordinate. Since it is five above the x-axis, you go five below the x-axis, or just give the OPPOSITE of 5, which is -5.

So, A' is at (2, -5).

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hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb