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Math

Math Snap

PROBLEM

If this triangle is reflected over the line y=ky=k, what are the coordinates for yy ?
(2,6)(-2,-6)
(6.2)(-6.2)
125
(6.2)

STEP 1

What is this asking?
If we flip this triangle over the line y=xy = x, where does point J end up?
Watch out!
Don't mix up the x and y coordinates!
Reflecting over y=xy = x swaps the coordinates.
Reflecting over the x-axis changes the sign of the y-coordinate, and reflecting over the y-axis changes the sign of the x-coordinate.

STEP 2

1. Understand Reflection over y=xy = x
2. Find the Reflected Point

STEP 3

Alright, so we're reflecting over the line y=xy = x.
What does that even mean?
Imagine folding your paper along the line y=xy = x.
Where would the triangle land?

STEP 4

Reflecting a point over y=xy = x swaps its x and y coordinates.
Think of it like this: the line y=xy = x acts like a mirror.
If a point is above the line, its reflection will be below, and vice-versa.
If a point is to the left of the line, its reflection will be to the right, and vice-versa.

STEP 5

Our point J has coordinates (6,2)(6, 2).
The x-coordinate is 6, and the y-coordinate is 2.

STEP 6

To reflect J over the line y=xy = x, we simply swap the x and y coordinates!
So, the new x-coordinate will be the old y-coordinate, and the new y-coordinate will be the old x-coordinate.

STEP 7

Therefore, the reflected point J' will have coordinates (2,6)(2, 6).
We swapped the 6 and the 2!

SOLUTION

The coordinates of point J after reflecting over the line y=xy = x are (2,6)(2, 6).

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