A Lady Bug Moves on the Xy-Plane According the The Equations

Essay

A lady bug moves on the xy-plane according the the equations $x=2 t(t-8)$ , $y=3-t$ .
Suppose that the temperature at a point (x, y)in the plane depends only on the y coordinate of the point and is equal to $4 y^{2}$ .Find the rate of change of the temperature at the location of the lady bug at time t.