slope=rise/run if run=0, we get an undefined slope means that it does go left or right, only up and down the equaiton will be x=something x intercept is -7 so the equation is x=-7
H=0 Therefore: 144t-16t²=0 t (144-16t)=0 We have two equations: 1) t=0 (when the ball is released) 2) 144-16t=0 -16t=-144 t=-144 / -16=9 (this is the time )
