# Simple problem

Weave

## Homework Statement

A particle is moving along the curve $$y= 3 \sqrt(4 x + 4)$$. As the particle passes through the point (3, 12), its x-coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

## Homework Equations

1.$$y= 3* \sqrt(4 x + 4)$$

## The Attempt at a Solution

Not too sure how to start.

No wonder you are having a problem! When dealing with "distance to the origin", you really need to know that the distance from a point (x,y) to the origin, (0,0), is $\sqrt{x^2+ y^2}$!