For the following exercises, use a graphing utility to graph the given parametric equations.

A skateboarder riding on a level surface at a constant speed of 9 ft/s throws a ball in the air, the height of which can be described by the equation y(t) = −16t²  + 10t + 5.Write parametric equations for the ball’s position, and then eliminate time to write height as a function of horizontal position.

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a. x(t): = cost - 1 y(t) = sint + t b. x(t) = cost+t y(t) = sin t - 1 C. x(t) = t - sin t = cost-1 [y(t) =