The coordinates of the image of point (2 , -4) after reflection across
the x-axis is (2 , 4)
Step-by-step explanation:
Let us revise the reflection of a point
1. If point (x , y) reflected across the x-axis, then its image is (x , -y)
2. If point (x , y) reflected across the y-axis, then its image is (-x , y)
3. If point (x , y) reflected across the line y = x, then its image is (y , x)
4. If point (x , y) reflected across the line y = -x, then its image is (-y , -x)
∵ Point (2, -4) is reflected across the x-axis
∵ Point (x , y) reflected across the x-axis, then its image is (x , -y)
- Chang the sign of the y-coordinate of the point to find its image
∵ The y-coordinate of the point is -4
∴ The y-coordinate of the image is 4
∴ The image of the point (2 , -4) is (2 , 4) after reflection across the
x-axis
The coordinates of the image of point (2 , -4) after reflection across
the x-axis is (2 , 4)
Learn more:
You can learn more about reflection in brainly.com/question/5017530
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