Answer:
it is D I'm pretty sure but ask ZJH to
B . [tex]d = \sqrt{x^2+y^2}[/tex]
Step-by-step explanation:
The original formula is
[tex]d = \sqrt{(x_2-x_1)^2 +(y_2-y_1)^2} \\\\x_2-x_1 =x\\y_2-y_1 =y\\\\So... \: ;\\d = \sqrt{x^2+y^2}[/tex]