Final answer:
The triangle with a hypotenuse defined by the equation y = (2/3)x is the blue triangle.
So, the correct answer is C.
Step-by-step explanation:
To find the similar triangles with a hypotenuse defined by the equation y = (2/3)x, we need to look for triangles that have a hypotenuse that follows this equation. Let's analyze the options:
A. Green triangle: We don't have enough information to determine the equation of this triangle's hypotenuse.
B. Purple triangle: The hypotenuse of this triangle is not defined by the equation y = (2/3)x.
C. Blue triangle: The hypotenuse of this triangle is defined by the equation y = (2/3)x. So, the blue triangle is similar to the given triangle.
D. Red triangle: We don't have enough information to determine the equation of this triangle's hypotenuse.
Therefore, the triangle with a hypotenuse defined by the equation y = (2/3)x is the blue triangle (option C).
So, the correct answer is C.