The following graph shows a proportional relationship. What is the constant of proportionality between y and x in the graph?

here is the

mark brainliest pl

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

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