Write an equation of the line that passes through (5,1) and is parallel to the line y=−2x+4

The parabola opens: y=√x-4 (principal square root) up down right left

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

What is the measure of angle x? answer