



 
Hi Eunice, The parameterisation $x = t$ and $y = 5 t^2 + 80$ almost works. With this parameterisation when $t = 0$ you are at $(0, 80)$ and at $t = 5$ you are at $(5, 45)$ so you have moved along the curve in the wrong direction. Do you see how to modify the parameterisation so that as $t$ moves from 0 to 5 you move along the curve in the opposite direction? Penny  


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