### Home > APCALC > Chapter 10 > Lesson 10.3.2 > Problem10-147

10-147.

For the parametric equations $x(t) = 4t^2 - 4t$ and $y(t) = 1 - 4t^2$, write the equations of each horizontal tangent line to the curve and the corresponding $t$‑value. Homework Help ✎

$\frac{dy/dt}{dx/dt}=0$

$\frac{dy}{dt}=-8t=0$