The mirror image of the point (2, 5) in the x – axis is?

(2,-5)

Step-by-step explanation:

Reflecting (2,5) across x-axis will invert it's y-coordinate and will make it negative.

(2,-5).

Step-by-step explanation:

You see, when you reflect over something, one variable has to change. Our line of reflection is the x-axis, or y=0.

Here is a rule to help with these kinds of problems.

If you reflect over the x-axis, the x value is still the same, but the y value changes to be the inverse or opposite value. The opposite of positive is negative, so it will be -5.

For reflected over the y-axis, the y value stays the same, but the x value changes to be the inverse of the original y value.

∞ this is your sign

geometry: triangles

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answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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