# Related rates calculus....HELP!!?

**Question description**

A particle is moving along the curve y=(x)^.5(square root of x) as the particle passes thru the point (4,2) its x-coordinate increases at a rate of 3 cm/s. How fast is the distance from the particle to the origin changing at this instant?

I understand how to do related rates ith triangels, just not this one with the graphs. Please help!

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