Question

HELP PLEASE THIS IS REALLY IMPORTANT

Answer 1

Distance formula:
$d= \sqrt{(x_b-x_a)^2+(y_b-y_a)^2} \\ d=3 \ \ x_a= 4 \ \ y_a=2 \\ \\ \boxed{ 3= \sqrt{(x-4)^2+(y-2)^2} }$