3 years ago

Triangle STU has reflected over line m to form Triangle S'T'U'. What is the value of y?

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

3 0

Answer:

D. 5

Step-by-step explanation:

The congruence of S'T' with ST tells you ...

9 = x +7

2 = x

The congruence of S'U' and SU tells you ...

4x = y +3

4·2 -3 = y = 5 . . . . substitute the value of x; subtract 3

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