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Triangle A'B'C' is formed by a reflection over x = -3 and dilation by a scale factor of 3 from the origin. Which equation shows the correct relationship between ΔABC and ΔA'B'C'?

a) AB = 3A'B'
b) BC = 3B'C'
c) AC = 3A'C'
d) All of the above

User Zeljko
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1 Answer

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Final answer:

Triangle A'B'C' is formed by a reflection over x = -3 and dilation by a scale factor of 3 from the origin. The correct equation that shows the relationship between ΔABC and ΔA'B'C' is d) All of the above.

Step-by-step explanation:

To find the correct relationship between ΔABC and ΔA'B'C', we need to understand the transformations that have been applied. The triangle A'B'C' is formed by a reflection over the line x = -3 and a dilation by a scale factor of 3 from the origin.

When we reflect a point over the line x = -3, the x-coordinate stays the same, but the y-coordinate becomes its negative. So, (x, y) becomes (x, -y).

After the reflection, we dilate the triangle by a scale factor of 3 from the origin, which means that each coordinate is multiplied by 3. Therefore, the coordinates of A', B', and C' are (3x, -3y), (3x, -3y), and (3x, -3y) respectively.

The correct equation that shows the relationship between ΔABC and ΔA'B'C' is d) All of the above. This is because all three sides of the triangle are multiplied by a scale factor of 3 in the dilation process, which means that AB = 3A'B', BC = 3B'C', and AC = 3A'C'.

User Wegelagerer
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