Step-by-step explanation:
y is the hypotenuse.
to find the hypotenuse:
a² + b² = c²
c = √ ( a² + b² )
y is the hypotenuse, a = 3, b = 3
y = √( a² + b² )
y = √ ( 3² + 3² )
[tex]y = \sqrt{ {3}^{2} + 3 {}^{2} } [/tex]