Hey, If your reading this I really need help i’m confused about this topic in math, and if someone could please answer it I would be so grateful.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?