Does the equation y = x/2 represent a proportional relationship

Yes, it does.

Step-by-step explanation:

In mathematics, proportional relationship means that as x increases, y does too; on the other hand, if x decreases, y also does. Besides this, the ratio between them will always stay the same, which in this case is 2. Due to this, the correct answer is yes.

the answer is 11.2 (i know i’m late)

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus