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Jlenok [28]
3 years ago
9

Complete the mapping of the vertices of ΔDEF. D(2, –4) → D' E(1, –1) → E' F(5, 1) → F' What is the rule that describes a reflect

ion across the line y = x? rx = y(x, y) →
Mathematics
2 answers:
user100 [1]3 years ago
8 0

Answer: The rule of reflection across the line y = x is

(x,y)\rightarrow(y,x)

The mapping of the vertices of ΔDEF is given by :-

D(2,-4)\rightarrow D'(-4,2)\\\\E(1, -1) \rightarrow E'(-1.1)\\\\F(5, 1) \rightarrow F'(1,5)

Step-by-step explanation:

When we reflect a point across the line y = x, the x-coordinate and y-coordinate interchanges places.

The rule of reflection across the line y = x is

(x,y)\rightarrow(y,x)

Then, the mapping of the vertices of ΔDEF is given by :-

D(2,-4)\rightarrow D'(-4,2)\\\\E(1, -1) \rightarrow E'(-1.1)\\\\F(5, 1) \rightarrow F'(1,5)

adelina 88 [10]3 years ago
7 0

D(2, –4) → D' = (-4, 2)

E(1, –1) → E'= (-1, 1)

F(5, 1) → F'=(1, 5)

What is the rule that describes a reflection across the line y = x?


rx = y(x, y)= (y, x)

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