Question

Calculate the length of the hypotenuse of right triangle RST
after reflecting the original triangle with vertices R(0,0)
, S(6,0)
, and T(0,8)
across the y
-axis.

Right triangle RST plotted on a coordinate plane.
(1 point)

8 units

10 units

6 units

14 units
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Answer 1

Reflecting across the y-axis gives S'(-6,0), T stays (0,8). The hypotenuse is between S' and T:

Length = sqrt[(-6 - 0)^2 + (0 - 8)^2] = sqrt(36 + 64) = sqrt(100) = 10 units.